Fix: Fixed an issue where panes couldn't be switched via touch (#15493)

Author: XTorLukas

src/Files.App/Views/PaneHolderPage.xaml.cs

@@ -335,8 +335,12 @@ private void Pane_Loaded(object sender, RoutedEventArgs e)
 		{
 			((UIElement)sender).GotFocus += Pane_GotFocus;
 			((UIElement)sender).RightTapped += Pane_RightTapped;
+			((UIElement)sender).PointerPressed += Pane_PointerPressed;
 		}
 
+		private void Pane_PointerPressed(object sender, PointerRoutedEventArgs e)
+			=> (sender as UIElement)?.Focus(FocusState.Pointer);
+
 		private void Pane_GotFocus(object sender, RoutedEventArgs e)
 		{
 			var isLeftPane = sender == PaneLeft;