Blender Git Loki

Fix T58327: Quick Favorites "Remove from Favorites" missing for added
Modifiers

Since user menu entries from SPACE_BUTS/SPACE_TOPBAR are also shown in
other Editors (SPACE_VIEW3D), also allow these entries to be removed
from Quick Favorites from these Editors.
Match and deduplicate logic from screen_user_menu_draw() and
ui_popup_context_menu_for_button().

Reviewers: campbellbarton, brecht

Maniphest Tasks: T58327

Differential Revision: https://developer.blender.org/D4112