Fixed context menu appearing when holding pen

src/PixiEditor/Views/Main/ViewportControls/Viewport.axaml

@@ -277,6 +277,7 @@
             BackgroundBitmap="{Binding BackgroundBitmap, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=viewportControls:Viewport}, Mode=OneWay}"
             MaxBilinearSamplingSize="{Binding MaxBilinearSamplingSize, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=viewportControls:Viewport}, Mode=OneWay}"
             PointerPressed="Scene_OnContextMenuOpening"
+            ContextRequested="Scene_OnContextRequested"
             ui1:RenderOptionsBindable.BitmapInterpolationMode="{Binding Scale, Converter={converters:ScaleToBitmapScalingModeConverter}, RelativeSource={RelativeSource Self}}">
             <rendering:Scene.ContextFlyout>
                 <Flyout x:CompileBindings="True" x:DataType="subViewModels:ViewportWindowViewModel"

src/PixiEditor/Views/Main/ViewportControls/Viewport.axaml.cs

@@ -434,6 +434,7 @@ internal partial class Viewport : UserControl, INotifyPropertyChanged
         Scene.ScaleChanged += OnScaleChanged;
     }
 
+
     private void OnScaleChanged(double newScale)
     {
         SnappingViewModel.SnappingController.SnapDistance = SnappingController.DefaultSnapDistance / newScale;
@@ -776,4 +777,9 @@ internal partial class Viewport : UserControl, INotifyPropertyChanged
             }
         }
     }
+
+    private void Scene_OnContextRequested(object? sender, ContextRequestedEventArgs e)
+    {
+        e.Handled = true;
+    }
 }