
While the gsetting is available for all who needs it, the Shell might override it given various hueristics. Expose the decision made by the Shell via a new property. Intended to be used by gsd-xsettings as well as xdg-desktop-portal-gtk. This also add a version property to the API, so that semi external services (xdg-desktop-portal-gtk) can detect what API is expected to be present. https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/757