chore: build error

Author: ramezgerges

src/Uno.UI/UI/Xaml/Controls/TextBox/TextBox.cs

@@ -1159,6 +1159,15 @@ protected override void OnTapped(TappedRoutedEventArgs e)
 
 		partial void OnTappedPartial();
 
+		partial void OnKeyDownPartial(KeyRoutedEventArgs args);
+
+		protected override void OnKeyDown(KeyRoutedEventArgs args)
+		{
+			base.OnKeyDown(args);
+
+			OnKeyDownPartial(args);
+		}
+
 		private protected override void OnPostKeyDown(KeyRoutedEventArgs args)
 		{
 #if __SKIA__

src/Uno.UI/UI/Xaml/Controls/TextBox/TextBox.skia.cs

@@ -434,7 +434,7 @@ private void UpdateScrolling(bool putSelectionEndInVisibleViewport)
 		}
 	}
 
-	protected override void OnKeyDown(KeyRoutedEventArgs args)
+	partial void OnKeyDownPartial(KeyRoutedEventArgs args)
 	{
 		// This is a minimal copy of OnkeyDownSkia that just sets args.Handled without doing any work.
 		// This is to match WinUI behavior where Handled is set for certain keys before public