fd0da9606f
It doesn't make sense to show the 'Open Windows' in the app menu, if the app only has 1 open window to switch between. Hide the window section in that case. Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/4199. Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1827>