Merge pull request #4506 from AvaloniaUI/fixes/menus-close-and-open-as-pointerover

Fixes/menus close and open as pointerover

src/Avalonia.Themes.Default/MenuItem.xaml

@@ -109,6 +109,7 @@
             </ContentPresenter>
             <Popup Name="PART_Popup"
                    IsLightDismissEnabled="True"
+                   OverlayInputPassThroughElement="{Binding $parent[Menu]}"
                    IsOpen="{TemplateBinding IsSubMenuOpen, Mode=TwoWay}">
               <Border Background="{TemplateBinding Background}"
                       BorderBrush="{DynamicResource ThemeBorderMidBrush}"