feat(module:input-number): add nzBlur and nzFocus output (#9098)

Author: HyperLife1119

components/input-number/doc/index.en-US.md

@@ -36,6 +36,8 @@ When a numeric value needs to be provided.
 | `[nzSize]`        | input box size, optional `large` `default` `small`                              | `string`                                                                | `default`                                                                                                                           |
 | `[nzStep]`        | step of each change, can be a decimal                                           | `number`                                                                | `1`                                                                                                                                 |
 | `(nzOnStep)`      | callback when clicking the up and down arrows                                   | `EventEmitter<{ value: number, offset: number, type: 'up' \| 'down' }>` | -                                                                                                                                   |
+| `(nzFocus)`       | callback when focus                                                             | `OutputRef<void>`                                                       | -                                                                                                                                   |
+| `(nzBlur)`        | callback when blur                                                              | `OutputRef<void>`                                                       | -                                                                                                                                   |
 | `(ngModelChange)` | callback function when the value changes                                        | `EventEmitter<number>`                                                  | -                                                                                                                                   |
 
 #### Methods

components/input-number/doc/index.zh-CN.md

@@ -37,6 +37,8 @@ description: 通过鼠标或键盘，输入范围内的数值。
 | `[nzSize]`        | 输入框大小，可选 `large` `default` `small`                     | `string`                                                                | `default`                                                                                                                           |
 | `[nzStep]`        | 每次改变步数，可以是小数                                       | `number`                                                                | `1`                                                                                                                                 |
 | `(nzOnStep)`      | 点击上下箭头的回调                                             | `EventEmitter<{ value: number, offset: number, type: 'up' \| 'down' }>` | -                                                                                                                                   |
+| `(nzFocus)`       | focus 时回调                                                   | `OutputRef<void>`                                                       | -                                                                                                                                   |
+| `(nzBlur)`        | blur 时回调                                                    | `OutputRef<void>`                                                       | -                                                                                                                                   |
 | `(ngModelChange)` | 值变化时的回调函数                                             | `EventEmitter<number>`                                                  | -                                                                                                                                   |
 
 #### 方法

components/input-number/input-number.component.ts

@@ -192,6 +192,9 @@ export class NzInputNumberComponent implements OnInit, ControlValueAccessor {
   readonly nzKeyboard = input(true, { transform: booleanAttribute });
   readonly nzControls = input(true, { transform: booleanAttribute });
 
+  readonly nzBlur = output<void>();
+  readonly nzFocus = output<void>();
+
   readonly nzOnStep = output<{ value: number; offset: number; type: 'up' | 'down' }>();
 
   private onChange: OnChangeType = () => {};
@@ -300,9 +303,12 @@ export class NzInputNumberComponent implements OnInit, ControlValueAccessor {
         .subscribe(origin => {
           this.focused.set(!!origin);
 
-          if (!origin) {
+          if (origin) {
+            this.nzFocus.emit();
+          } else {
             this.fixValue();
             this.onTouched();
+            this.nzBlur.emit();
           }
         });