Support renaming Flatpak apps
Currently when a Flatpak app has been renamed using e.g. flatpak build-commit-from --end-of-life-rebase=OLDID=NEWID ...
, GNOME Software neglects to update it to the new name. This branch updates such renamed apps, matching the behavior on the Flatpak command line when the user answers prompts in the affirmative. See the commit messages for details.