SDK / exoplayer

When initiated by MediaController, it should be possible for `MediaSession` to pass `MediaItems` to the `Player` if they have `LocalConfiguration`. In such case, it is not required to override `MediaSession.Callback.onAddMediaItems`, because the new current default implementation will handle it.

However, in other cases, MediaItem.toBundle() will continue to strip the LocalConfiguration information.

Issue: androidx/media#282

#minor-release

PiperOrigin-RevId: 537993460
(cherry picked from commit bcddaf27654ed342ce70fc7a270d478953c2fb80)