This was originally reported on #9390. There was a bug that when HLS
loads failed, the player would endlessly retry and never fail with a
player error.
This change fixes a bug in HlsSampleStreamWrapper.onPlaylistError()
which would return true for a playlist whose load encountered an error
but could not be excluded, whereas the method should return false.
Issue: #9390
PiperOrigin-RevId: 397045802
