5f509855e2
As backgrounds are cached, it is possible that we never emit the 'loaded' signal added in commit f386103bc1. We are relying on the signal though, so do the same as Background and emit the signal from an idle if the background was already loaded. https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1371 (cherry picked from commit 5c550daecb18fff1ef98a48374ceec71f270ce89)