PGS subtitles not shown when using MediaSessionService

Media3 Version

1.0.0-rc02

Devices that reproduce the issue

Pixel 6 Pro

Devices that do not reproduce the issue

No response

Reproducible in the demo app?

No

Reproduction steps

1. Set up MediaSessionService and get a controller in an activity with PlayerView
2. Set playerView.player = controller
3. Play any video with PGS subtitles

Expected result

PGS subtitles should correctly render as it is supported and correctly render when using ExoPlayer directly.

Actual result

PGS subtitles are not shown.

When ExoPlayer is created in the same activity (without a MediaSessionService and MediaController) and passed to PlayerView, PGS subtitles correctly render.

Media

Sample video with PGS subtitles (from Kodi):
https://drive.google.com/file/d/0BwxFVkl63-lEVEluSFZ4NlhpLUk/view?usp=sharing&resourcekey=0-jrRNAhII3KVOq5Qid60tCw

Bug Report

• You will email the zip file produced by adb bugreport to dev.exoplayer@gmail.com after filing this issue.