Remove strictNullChecks

[pandamicro]

Re: User feedback to avoid union null type in properties

Changelog

• Remove strictNullChecks

Avoid having to do the following

class Foo {
    public bar: Node | null = null;

    func () {
        if (this.bar) {
            // ...
        }
    }
}

---

Continuous Integration

This pull request:

• needs automatic test cases check.

  Manual trigger with @cocos-robot run test cases afterward.

• does not change any runtime related code or build configuration

  If any reviewer thinks the CI checks are needed, please uncheck this option, then close and reopen the issue.

---

Compatibility Check

This pull request:

• changes public API, and have ensured backward compatibility with deprecated features.
• affects platform compatibility, e.g. system version, browser version, platform sdk version, platform toolchain, language version, hardware compatibility etc.
• affects file structure of the build package or build configuration which requires user project upgrade.
• introduces breaking changes, please list all changes, affected features and the scope of violation.

[github-actions]

Interface Check Report

! WARNING this pull request has changed these public interfaces:

@@ -992,9 +992,9 @@
         protected _pixelsToUnit: number;
         protected _pivot: math.Vec2;
         protected _meshType: __private._cocos_2d_assets_sprite_frame__MeshType;
         protected _extrude: number;
-        protected _customOutLine: never[];
+        protected _customOutLine: any[];
         protected _mesh: Mesh | null;
         protected _minPos: math.Vec3;
         protected _maxPos: math.Vec3;
         constructor();
@@ -7306,9 +7306,9 @@
      * 动画曲线。
      * @deprecated since v3.5.0, this is an engine private interface that will be removed in the future.
      */
     export class AnimCurve {
-        static Linear: null;
+        static Linear: any;
         static Bezier(controlPoints: number[]): BezierControlPoints;
         types?: Array<(AnimationClip._legacy.LegacyEasingMethod | null)>;
         type?: AnimationClip._legacy.LegacyEasingMethod | null;
         constructor(propertyCurveData: Omit<AnimationClip._legacy.LegacyClipCurveData, "keys">, duration: number);
@@ -17630,18 +17630,18 @@
             raySphere: (ray: Ray, sphere: Sphere) => number;
             rayAABB: (ray: Ray, aabb: AABB) => number;
             rayOBB: (ray: Ray, obb: OBB) => number;
             rayPlane: (ray: Ray, plane: Plane) => number;
-            rayTriangle: (ray: Ray, triangle: Triangle, doubleSided?: boolean | undefined) => number;
+            rayTriangle: (ray: Ray, triangle: Triangle, doubleSided?: boolean) => number;
             rayCapsule: (ray: Ray, capsule: Capsule) => number;
-            raySubMesh: (ray: Ray, submesh: RenderingSubMesh, options?: IRaySubMeshOptions | undefined) => number;
-            rayMesh: (ray: Ray, mesh: Mesh, options?: IRayMeshOptions | undefined) => number;
-            rayModel: (r: Ray, model: renderer.scene.Model, options?: IRayMeshOptions | undefined) => number;
+            raySubMesh: (ray: Ray, submesh: RenderingSubMesh, options?: IRaySubMeshOptions) => number;
+            rayMesh: (ray: Ray, mesh: Mesh, options?: IRayMeshOptions) => number;
+            rayModel: (r: Ray, model: renderer.scene.Model, options?: IRayModelOptions) => number;
             lineSphere: typeof __private._cocos_core_geometry_intersect__lineSphere;
             lineAABB: typeof __private._cocos_core_geometry_intersect__lineAABB;
             lineOBB: typeof __private._cocos_core_geometry_intersect__lineOBB;
             linePlane: (line: Line, plane: Plane) => number;
-            lineTriangle: (line: Line, triangle: Triangle, outPt?: math.Vec3 | undefined) => number;
+            lineTriangle: (line: Line, triangle: Triangle, outPt?: math.Vec3) => number;
             sphereWithSphere: (sphere0: Sphere, sphere1: Sphere) => boolean;
             sphereAABB: (sphere: Sphere, aabb: AABB) => boolean;
             sphereOBB: (sphere: Sphere, obb: OBB) => boolean;
             spherePlane: (sphere: Sphere, plane: Plane) => number;
@@ -17668,9 +17668,9 @@
              * @param g2 @en The second geometry. @zh 第二个几何体。
              * @param outPt @en A 3d point to store the intersection point result, only part of the geometries support this.
              *              @zh 可选，用于保存相交点的输出对象。（注：仅部分形状的检测带有这个返回值）
              */
-            resolve(g1: any, g2: any, outPt?: null): number;
+            resolve(g1: any, g2: any, outPt?: any): number;
         };
         /**
          * @en
          * Basic Geometry: Line.
@@ -19830,12 +19830,12 @@
             extend: typeof extend;
             getSuper: typeof getSuper;
             isChildClassOf: typeof isChildClassOf;
             clear: typeof clear;
-            value: (object: Record<string | number, any>, propertyName: string, value_: any, writable?: boolean | undefined, enumerable?: boolean | undefined) => void;
-            getset: (object: Record<string | number, any>, propertyName: string, getter: __private._types_globals__Getter, setter?: boolean | __private._types_globals__Setter | undefined, enumerable?: boolean | undefined, configurable?: boolean | undefined) => void;
-            get: (object: Record<string | number, any>, propertyName: string, getter: __private._types_globals__Getter, enumerable?: boolean | undefined, configurable?: boolean | undefined) => void;
-            set: (object: Record<string | number, any>, propertyName: string, setter: __private._types_globals__Setter, enumerable?: boolean | undefined, configurable?: boolean | undefined) => void;
+            value: (object: Record<string | number, any>, propertyName: string, value_: any, writable?: boolean, enumerable?: boolean) => void;
+            getset: (object: Record<string | number, any>, propertyName: string, getter: __private._types_globals__Getter, setter?: boolean | __private._types_globals__Setter, enumerable?: boolean, configurable?: boolean) => void;
+            get: (object: Record<string | number, any>, propertyName: string, getter: __private._types_globals__Getter, enumerable?: boolean, configurable?: boolean) => void;
+            set: (object: Record<string | number, any>, propertyName: string, setter: __private._types_globals__Setter, enumerable?: boolean, configurable?: boolean) => void;
             unregisterClass: typeof unregisterClass;
             getClassName: typeof getClassName;
             setClassName: typeof setClassName;
             setClassAlias: typeof setClassAlias;
@@ -20199,9 +20199,9 @@
          * @zh 要添加的属性值，或者取代现有属性的新值。
          * @param writable @en If the property is writable. @zh 属性是否可写。
          * @param enumerable @en If the property is enumerable. @zh 属性是否可枚举。
          */
-        export const value: (object: Record<string | number, any>, propertyName: string, value_: any, writable?: boolean | undefined, enumerable?: boolean | undefined) => void;
+        export const value: (object: Record<string | number, any>, propertyName: string, value_: any, writable?: boolean, enumerable?: boolean) => void;
         /**
          * @en A helper function to add or modify `get`, `set`, `enumerable` or `configurable` of a property.
          * @zh 添加或修改属性的 `get`, `set`, `enumerable` 或者 `configurable`。
          * @param object @en The object to add or modify attributes. @zh 要添加或者修改属性的对象。
@@ -20210,9 +20210,9 @@
          * @param setter @en The setter of a property. @zh 属性的设置函数。
          * @param enumerable @en If the property is enumerable. @zh 属性是否可列举。
          * @param configurable @en If the property is configurable. @zh 属性是否可配置。
          */
-        export const getset: (object: Record<string | number, any>, propertyName: string, getter: __private._types_globals__Getter, setter?: boolean | __private._types_globals__Setter | undefined, enumerable?: boolean | undefined, configurable?: boolean | undefined) => void;
+        export const getset: (object: Record<string | number, any>, propertyName: string, getter: __private._types_globals__Getter, setter?: __private._types_globals__Setter | boolean, enumerable?: boolean, configurable?: boolean) => void;
         /**
          * @en A helper function to add or modify `get`, `enumerable` or `configurable` of a property.
          * @zh 添加或修改属性的 `get`, `enumerable` 或者 `configurable`。
          * @param object @en The object to add or modify attributes. @zh 要添加或者修改属性的对象。
@@ -20220,9 +20220,9 @@
          * @param getter @en The getter of a property. @zh 属性的获取函数。
          * @param enumerable @en If the property is enumerable. @zh 属性是否可列举。
          * @param configurable @en If the property is configurable. @zh 属性是否可配置。
          */
-        export const get: (object: Record<string | number, any>, propertyName: string, getter: __private._types_globals__Getter, enumerable?: boolean | undefined, configurable?: boolean | undefined) => void;
+        export const get: (object: Record<string | number, any>, propertyName: string, getter: __private._types_globals__Getter, enumerable?: boolean, configurable?: boolean) => void;
         /**
          * @en A helper function to add or modify `get`, `enumerable` or `configurable` of a property.
          * @zh 添加或修改属性的 `get`, `enumerable` 或者 `configurable`。
          * @param object @en The object to add or modify attributes. @zh 要添加或者修改属性的对象。
@@ -20230,9 +20230,9 @@
          * @param setter @en The setter of a property. @zh 属性的设置函数。
          * @param enumerable @en If the property is enumerable. @zh 属性是否可列举。
          * @param configurable @en If the property is configurable. @zh 属性是否可配置。
          */
-        export const set: (object: Record<string | number, any>, propertyName: string, setter: __private._types_globals__Setter, enumerable?: boolean | undefined, configurable?: boolean | undefined) => void;
+        export const set: (object: Record<string | number, any>, propertyName: string, setter: __private._types_globals__Setter, enumerable?: boolean, configurable?: boolean) => void;
         /**
          * @deprecated since v3.5.0, this is an engine private interface that will be removed in the future.
          */
         export const _idToClass: Record<string, __private._types_globals__Constructor>;
@@ -23828,9 +23828,9 @@
     export class PipelineStateManager {
         static getOrCreatePipelineState(device: gfx.Device, pass: renderer.Pass, shader: gfx.Shader, renderPass: gfx.RenderPass, ia: gfx.InputAssembler): gfx.PipelineState;
     }
     export class PipelineEventProcessor extends EventTarget {
-        eventTargetOn: <TFunction extends (...any: any[]) => void>(type: string | number, callback: TFunction, thisArg?: any, once?: boolean | undefined) => TFunction;
+        eventTargetOn: <TFunction extends (...any: any[]) => void>(type: string | number, callback: TFunction, thisArg?: any, once?: boolean) => TFunction;
         eventTargetOnce: <TFunction extends (...any: any[]) => void>(type: string | number, callback: TFunction, thisArg?: any) => TFunction;
         on(type: PipelineEventType, callback: any, target?: any, once?: boolean): typeof callback;
         once(type: PipelineEventType, callback: any, target?: any): typeof callback;
     }
@@ -24993,9 +24993,9 @@
          *
          * @deprecated since v3.5.0, this is an engine private interface that will be removed in the future.
          */
         _globals: SceneGlobals;
-        dependAssets: null;
+        dependAssets: any;
         protected _renderScene: renderer.RenderScene | null;
         protected _inited: boolean;
         protected _prefabSyncedInLiveReload: boolean;
         protected _updateScene(): void;
@@ -25281,9 +25281,9 @@
          *
          * @deprecated since v3.5.0, this is an engine private interface that will be removed in the future.
          */
         get _isOnLoadCalled(): number;
-        static system: null;
+        static system: any;
         /**
          * @en The node this component is attached to. A component is always attached to a node.
          * @zh 该组件被附加到的节点。组件总会附加到一个节点。
          * @example
@@ -27123,9 +27123,9 @@
         static safeFindClass(id: string): __private._types_globals__Constructor<unknown> | undefined;
         /**
          * @deprecated since v3.5.0, this is an engine private interface that will be removed in the future.
          */
-        _$erialized: null;
+        _$erialized: any;
         constructor();
         onLoad(): void;
     }
     /**
@@ -27791,9 +27791,9 @@
          * @en The renderer backend of the game.
          * @zh 游戏的渲染器类型。
          */
         renderType: number;
-        eventTargetOn: <TFunction extends (...any: any[]) => void>(type: string | number, callback: TFunction, thisArg?: any, once?: boolean | undefined) => TFunction;
+        eventTargetOn: <TFunction extends (...any: any[]) => void>(type: string | number, callback: TFunction, thisArg?: any, once?: boolean) => TFunction;
         eventTargetOnce: <TFunction extends (...any: any[]) => void>(type: string | number, callback: TFunction, thisArg?: any) => TFunction;
         /**
          * @en
          * The current game configuration,
@@ -29638,9 +29638,9 @@
         loadPipe: typeof __private._cocos_asset_asset_manager_load__default;
         /**
          * @internal
          */
-        references: AssetManager.Cache<any[]> | null;
+        references: AssetManager.Cache<any[]>;
         /**
          * @en
          * A global singleton instance of [[AssetManager]], which you can access directly through [[assetManager]].
          *
@@ -49366,16 +49366,16 @@
             export function cylinder(radiusTop?: number, radiusBottom?: number, height?: number, opts?: __private._types_globals__RecursivePartial<__private._cocos_primitive_cylinder__ICylinderOptions>): primitives.IGeometry;
             export const VEC3_0: math.Vec3;
             export const TriggerEventObject: {
                 type: TriggerEventType;
-                selfCollider: Collider | null;
-                otherCollider: Collider | null;
+                selfCollider: Collider;
+                otherCollider: Collider;
                 impl: any;
             };
             export const CharacterTriggerEventObject: {
                 type: CharacterTriggerEventType;
-                collider: Collider | null;
-                characterController: CharacterController | null;
+                collider: Collider;
+                characterController: CharacterController;
                 impl: any;
             };
             export const CollisionEventObject: {
                 type: CollisionEventType;
@@ -56722,15 +56722,15 @@
         animationState: {
             previewing: boolean;
             time: number;
             animatedSinceLastFrame: boolean;
-        } | null;
+        };
         init(): void;
         add(widget: Widget): void;
         remove(widget: Widget): void;
         onResized(): void;
         refreshWidgetOnResized(node: Node): void;
-        updateOffsetsToStayPut(widget: Widget, e?: __private._cocos_ui_widget__AlignFlags | undefined): void;
+        updateOffsetsToStayPut(widget: Widget, e?: __private._cocos_ui_widget__AlignFlags): void;
         updateAlignment: typeof __private._cocos_ui_widget_manager__updateAlignment;
         AlignMode: typeof __private._cocos_ui_widget__AlignMode;
         AlignFlags: typeof __private._cocos_ui_widget__AlignFlags;
     };
@@ -65701,9 +65701,9 @@
              * @en Space used to calculate limit velocity.
              * @zh 计算速度下限时采用的坐标系 [[Space]]。
              */
             space: number;
-            drag: null;
+            drag: any;
             multiplyDragByParticleSize: boolean;
             multiplyDragByParticleVelocity: boolean;
             name: string;
             constructor();