SDK / exoplayer

Previously two timelines that differed only in shuffle order were
considered equal, which resulted in no call to
Player.Listener.onTimelineChanged when calling
ExoPlayer.setShuffleOrder. This in turn resulted in no call to
MediaControllerCompat.Callback.onQueueChanged.

Also make a small fix inside ExoPlayerImpl.setShuffleOrder, to ensure
that the new shuffle order is used when constructing the masked
timeline.

Issue: google/ExoPlayer#9889
#minor-release
PiperOrigin-RevId: 457703727
(cherry picked from commit 6f9ce405)