Draft: community/gnome-shell: Add patch to fix crash on startup when OSK is enabled
See https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/7912.
Patch taken from https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3476.
(Spotted this on my main PC which had the OSK enabled in GDM due to prior keyboardless shenanigans, I don't doubt (though I haven't tested) that this could affect e.g. postmarketOS devices using the OSK as well.)
Draft until patch is merged upstream, let's not merge unapproved stuff :D