Prompted to install updates that are not prepared

In RHEL 9.1, I just received a desktop notification from GNOME Software prompting me to install updates that were not yet downloaded. By default, desktop notifications should only be created after the update is prepared (all updates are downloaded) with the only exception being if automatic update downloading is disabled (I did not disable that). This is the same bug that existed in Fedora 34-37 until it was recently resolved.

We probably need https://gitlab.gnome.org/GNOME/gnome-software/-/merge_requests/1401 and https://gitlab.gnome.org/GNOME/gnome-software/-/merge_requests/1565 at least.