If the reading period has already advanced and a track reselection procs that only affects the reading period media, then ExoPlayer may try and apply the reading period's track selection incorrectly unto the playing period. ExoPlayer should apply the playing period's track selection to the playing period instead.
PiperOrigin-RevId: 609375077
(cherry picked from commit 41929246222e9fdb9aa552db526c1b41d26bdb90)
81e91c25f1