AWM applications located in extensions are not protected against move/rename anymore

STEPS TO REPRODUCE

1. Login as Admin (simple user)
2. Go to Menu's App homepage: http://localhost:8080/xwiki/bin/view/Menu/
3. Click 'More Actions' > 'Move / Rename'
4. Type a new name (e.g. 'Menu1')
5. Click 'Rename'
6. Observe the Applications Panel
7. Go to Administer Wiki > Look & Feel > Menu
8. Go to http://localhost:8080/xwiki/bin/view/Menu1/ and try to rename back the application to 'Menu'

EXPECTED RESULTS

The Menu Application (and all pages containing XClass) is protected against moving/renaming. Simple users are forbidden to make refactoring operations in pages that contain used XClass, whereas advanced users get an UI to allow them selecting the pages to refactor.

ACTUAL RESULTS

The Menu can be renamed to 'Menu1' by using the rename application feature. After the rename, the application is displayed in Applications Panel. Also, the Menu section from Administration is blank. If the user tries to rename back the application to 'Menu', the action is not allowed.

The issue cannot be reproduced on XWiki 11.0.3.