Fixed a crash that would sometimes occur when right clicking an item using a touch screen (#1977)

Author: Thomas1664

Files/Views/LayoutModes/GenericFileBrowser.xaml

@@ -544,6 +544,7 @@
             PreparingCellForEdit="AllView_PreparingCellForEdit"
             PreviewKeyDown="AllView_PreviewKeyDown"
             RightTapped="AllView_RightTapped"
+            Holding="AllView_Holding"
             RowDetailsVisibilityMode="Collapsed"
             ScrollViewer.IsScrollInertiaEnabled="True"
             SelectionChanged="AllView_SelectionChanged"

Files/Views/LayoutModes/GenericFileBrowser.xaml.cs

@@ -375,6 +375,16 @@ private void AllView_PreviewKeyDown(object sender, KeyRoutedEventArgs e)
         }
 
         public void AllView_RightTapped(object sender, RightTappedRoutedEventArgs e)
+        {
+            HandleRightClick(sender, e);
+        }
+
+        public void AllView_Holding(object sender, HoldingRoutedEventArgs e)
+        {
+            HandleRightClick(sender, e);
+        }
+
+        private void HandleRightClick(object sender, RoutedEventArgs e)
         {
             var rowPressed = Interacts.Interaction.FindParent<DataGridRow>(e.OriginalSource as DependencyObject);
             if (rowPressed != null)