fix(pointers): Fix UI tests for wasm

As the `CanBubbleNatively` is no longer overriden by the `EventRegistration`, the `PointerEnter` and `PointerLeave` was invalidly bubbling.
Settings this flag back to `true` (even if it's not the reallity) fixes the issue.
This however does not fix the issue described here #3007

src/Uno.UI/UI/Xaml/UIElement.Pointers.wasm.cs

@@ -100,11 +100,17 @@ private void AddPointerHandlerCore(RoutedEvent routedEvent)
 		#endregion
 
 		#region Native event dispatch
+		// Note for Enter and Leave:
+		//	canBubble: true is actually not true.
+		//	When we subscribe to pointer enter in a window, we don't receive pointer enter for each sub-views!
+		//	But the web-browser will actually behave like WinUI for pointerenter and pointerleave, so here by setting it to true,
+		//	we just ensure that the managed code won't try to bubble it by its own.
+		//	However, if the event is Handled in managed, it will then bubble while it should not! https://github.com/unoplatform/uno/issues/3007
 		private static bool DispatchNativePointerEnter(UIElement target, string eventPayload)
-			=> TryParse(eventPayload, out var args) && target.OnNativePointerEnter(ToPointerArgs(target, args, isInContact: false, canBubble: false));
+			=> TryParse(eventPayload, out var args) && target.OnNativePointerEnter(ToPointerArgs(target, args, isInContact: false, canBubble: true));
 
 		private static bool DispatchNativePointerLeave(UIElement target, string eventPayload)
-			=> TryParse(eventPayload, out var args) && target.OnNativePointerExited(ToPointerArgs(target, args, isInContact: false, canBubble: false));
+			=> TryParse(eventPayload, out var args) && target.OnNativePointerExited(ToPointerArgs(target, args, isInContact: false, canBubble: true));
 
 		private static bool DispatchNativePointerDown(UIElement target, string eventPayload)
 			=> TryParse(eventPayload, out var args) && target.OnNativePointerDown(ToPointerArgs(target, args, isInContact: true));