
Now with the new parsing mechanism we are able to set `Super` as default for overlay-key. The parsing of the `Super` string will fail at the new mechanism will kick in by appending `_L` and `_R`. The parsing of the new two strings then will succeed and we will be able to use both Super_L and Super_R to activate the overview. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4050>