Flatpak add-on cannot be uninstalled if the base application was uninstalled first
Description of problem:
When a Flatpak application is uninstalled, its add-ons stay installed and cannot be uninstalled if the base app is not installed. Clicking their checkbox does nothing (and there is nothing in the GS verbose log).
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Use latest Fedora (Silverblue) Rawhide system.
Add Flathub repo using GNOME Software: https://flatpak.org/setup/Fedora/
Find "Sublime Text" and install it.
Install the "Sublime Text Developer Utilities" add-on.
Uninstall Sublime Text.
Try to uninstall the add-on.