Backups should include Hidden state for Playlists

Feature description

I would like app backups to remember which playlists I have hidden. This way, when restoring an app backup, I don’t need to go through my playlists and manually hide them all again.

Problem solved

Currently users must manually hide these playlists again after restoring them from a backup.

This can be tedious if you have many hidden playlists.

Brought benefits

App backups will more accurately restore the configured view of the playlist menu.

No need to remember which playlists were hidden and which weren’t.

Device type

All

Additional description and context

I understand it may be better for imported playlists to always be visible so that users aren’t confused why things don’t show up.

But for restoring app backups it would be helpful to restore the user’s preferred state.

I searched existing feature requests

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