[Python] Entry items are not displayed when sub-menus are added to the "LevelEditor.ActorContextMenu" section.

When the [Actor] menu is opened, the menu of the added entry can be displayed. When the [Actor] menu is opened from the LevelEditor's Outliner, it is not displayed. 

Solution: Add the required menu item to the outliner menu - "SceneOutliner.DefaultContextMenu". The menus are different, so this is expected if the menu entry is only added to the actor context menu, that it will not appear in the scene outliner unless it is added there.

1. Run the attached python script from the Editor
2. Check that the added command has been added to the menu