[BUG]: Importing favorites .json is impossible/overwritten

[yhilg]

Description of the bug

When one copies favorites off ~/.config/tera/favorites from an old system into a new one, the playlists do not get imported by the new tera. Even worst: they are sometimes overwritten.

Steps To Reproduce

1. Build a favorite.json on system A and copy it on system B (into ~/.config/tera/favorites)
2. tera -> 1 -> Select a list = 1) sample only
3. tera -> 1(play from list) -> 3(list, read) -> 4(show) = my lists: sample
4. 1(create a list) -> type list name -> is created = list ~/.config/tera/favorites now lists only sample + newly created list. All the other files are gone.

Additional Information

No response