
The method is now a plain getter of the `key-focus` property, so handle the case where it returns null. See https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4256 Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3633>
The method is now a plain getter of the `key-focus` property, so handle the case where it returns null. See https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4256 Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3633>