bf7cfb877c
Just like the existing in_cloned_branch counter, add a property which tracks whether the actor is part of a subtree that's being painted while unmapped. This is going to be useful for a few things, for example changing the clutter_actor_is_in_clone_paint() API to use enable_paint_unmapped instead of in_clone_paint. https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1366