Various fixes for various bugs.
Changelog
- Downmix audio by default on Chromecast with Google TV #1110, by @thornbill
- Remove useless check method #1111, by @thornbill
- Fix typo in subtitle profiles #1112, by @linetrimmer
- Forward audio play requests to playback module #1114, by @nielsvanvelzen
- Use parentThumbItemId in LeanbackChannelWorker #1119, by @linetrimmer
- Use actions/setup-java caching #1123, by @nielsvanvelzen
- Fix now playing bug layout #1125, by @thornbill