Do not conditionally ignore event props (#11059)

* Do not conditionally ignore event props

We derive BaseViewConfig from the iOS implementation, which included a
line that conditionally ignored event props in case the code was used on
any platform other than iOS. This prevented event props from reaching
native components that used `createViewConfig` (e.g., Text).

This removes the conditional function from BaseViewProps for Windows.

* Change files

* Add onMouseEnter/Leave event support to BaseViewConfig

Resolves #11060

* yarn lint:fix

change/react-native-windows-b23dc862-597b-4f85-a0e1-d8972cd1d250.json

@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "Do not conditionally ignore event props",
+  "packageName": "react-native-windows",
+  "email": "erozell@outlook.com",
+  "dependentChangeType": "patch"
+}

vnext/src/Libraries/NativeComponent/BaseViewConfig.windows.js

@@ -11,10 +11,7 @@
 import type {PartialViewConfigWithoutName} from './PlatformBaseViewConfig';
 
 import ReactNativeStyleAttributes from '../Components/View/ReactNativeStyleAttributes';
-import {
-  ConditionallyIgnoredEventHandlers,
-  DynamicallyInjectedByGestureHandler,
-} from './ViewConfigIgnore';
+import {DynamicallyInjectedByGestureHandler} from './ViewConfigIgnore';
 
 const bubblingEventTypes = {
   // Generic Events
@@ -162,6 +159,15 @@ const directEventTypes = {
   onGestureHandlerStateChange: DynamicallyInjectedByGestureHandler({
     registrationName: 'onGestureHandlerStateChange',
   }),
+  // [Windows
+  // Mouse enter/leave events
+  topMouseEnter: {
+    registrationName: 'onMouseEnter',
+  },
+  topMouseLeave: {
+    registrationName: 'onMouseLeave',
+  },
+  // Windows]
 };
 
 const validAttributesForNonEventProps = {
@@ -307,7 +313,9 @@ const validAttributesForNonEventProps = {
 };
 
 // Props for bubbling and direct events
-const validAttributesForEventProps = ConditionallyIgnoredEventHandlers({
+// [Windows
+const validAttributesForEventProps = {
+  // Windows]
   onLayout: true,
   onMagicTap: true,
 
@@ -346,13 +354,23 @@ const validAttributesForEventProps = ConditionallyIgnoredEventHandlers({
   onPointerLeave: true,
   onPointerOver: true,
   onPointerOut: true,
-});
+
+  // [Windows
+  // Mouse enter/leave events
+  onMouseEnter: true,
+  onMouseLeave: true,
+  // Windows]
+  // [Windows
+};
+// Windows]
 
 /**
  * On iOS, view managers define all of a component's props.
  * All view managers extend RCTViewManager, and RCTViewManager declares these props.
  */
+// [Windows
 const PlatformBaseViewConfigWindows: PartialViewConfigWithoutName = {
+  // Windows]
   bubblingEventTypes,
   directEventTypes,
   validAttributes: {