Update MediaSessionManager to return priority order of sessions as shown by System UI #171

In Media3 there is no class/mechanism equivalent of a MediaSessionManager?
If I want my app to control the media session that another app is running, the only way is to convert android.media.session.MediaSession.Token (obtained by the system MediaSessionManager) to MediaSessionCompat.Token then to convert it again to androidx.media3.session.Token? Or did I miss something?