R1:b0dfd42eef29

Don't require edit capability on the Favorites application to edit personal menu items

Summary:
Ref T11096. Currently, editing ProfileMenuItemConfigurations always requires that you can edit the corresponding object.

This is correct for global items (for example: you can't change the global menu for a project unless you can edit the project) but not for personal items.

For personal items, only require that the user can edit the `customPHID` object. Today, this is always their own profile.

Test Plan: As…