perf(WindowManager): Add SetPointerCapture binding

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

@@ -343,8 +343,7 @@ public partial class UIElement : DependencyObject
 	#region Capture
 	partial void CapturePointerNative(Pointer pointer)
 	{
-		var command = "Uno.UI.WindowManager.current.setPointerCapture(" + HtmlId + ", " + pointer.PointerId + ");";
-		WebAssemblyRuntime.InvokeJS(command);
+		WindowManagerInterop.SetPointerCapture(HtmlId, pointer.PointerId);
 	}
 
 	partial void ReleasePointerNative(Pointer pointer)

src/Uno.UI/UI/Xaml/WindowManagerInterop.wasm.cs

@@ -192,6 +192,16 @@ namespace Uno.UI.Xaml
 
 		#endregion
 
+		internal static void SetPointerCapture(IntPtr htmlId, uint pointerId)
+		{
+#if NET7_0_OR_GREATER
+			NativeMethods.SetPointerCapture(htmlId, pointerId);
+#else
+			var command = "Uno.UI.WindowManager.current.setPointerCapture(" + htmlId + ", " + pointerId + ");";
+			WebAssemblyRuntime.InvokeJS(command);
+#endif
+		}
+
 		#region MeasureView
 		internal static Size MeasureView(IntPtr htmlId, Size availableSize, bool measureContent)
 		{
@@ -1216,6 +1226,9 @@ namespace Uno.UI.Xaml
 			[JSImport("globalThis.Uno.UI.WindowManager.current.setElementTransformNativeFast")]
 			internal static partial void SetElementTransform(IntPtr htmlId, float m11, float m12, float m21, float m22, float m31, float m32);
 
+			[JSImport("globalThis.Uno.UI.WindowManager.current.setPointerCapture")]
+			internal static partial void SetPointerCapture(IntPtr htmlId, double pointerId);
+
 			[JSImport("globalThis.Uno.UI.WindowManager.current.setPointerEventsNativeFast")]
 			internal static partial void SetPointerEvents(IntPtr htmlId, bool enabled);
 

src/Uno.UI/ts/WindowManager.ts

@@ -1474,10 +1474,8 @@ namespace Uno.UI {
 			}
 		}
 
-		public setPointerCapture(viewId: number, pointerId: number): string {
+		public setPointerCapture(viewId: number, pointerId: number): void {
 			this.getView(viewId).setPointerCapture(pointerId);
-
-			return "ok";
 		}
 
 		public releasePointerCapture(viewId: number, pointerId: number): string {