[Unexpected behaviour] Steam locate try to list game from flatpak steam when it as been uninstalled instead of native steam

[Yato202010]

During the development of my app I wanted to add steam flatpak support but steamlocate suddenly stopped working after that test . It appears that Steamlocate only check if the steam folder is present and not if the steam flatpak is installed which is a big problems in the case of migration from steam flatpak to native steam since it appears that the steam flatpak folder is not deleted upon uninstall.