Improve user feedback if installation is not possible
While using gnome-software 44.3 on fedora 38 I tried to install an app from flathub which was already installed via the fedora remote.
Clicking the install button did not install the app and provided no additional information.
I tried installing via the commandline which revealed the information that installing the same app several times is not supported.
Uninstalling the app first and installing it afterwards from flathub worked.
It would be nice to have some UI containing some information why the installation is not possible to avoid confusing users.