Draft: chromecast: Disable HEVC for original Chromecast devices

Fixes #22504 (#27671 & #29133 are likely duplicates) The Chromecast API does not provide a direct way to determine if a device supports HEVC (H.265) decoding. To work around this limitation, we identify the original Chromecast model by its device name ("Chromecast") and disable HEVC streaming for these specific devices.

Marking as draft again: after testing, this was working on 3.x but as 4.x only checks for transcode when CC can't play, this is not enough. (as CC will pretend to play h265 content, but only audio)