Function determine_audio_track_switch_strategy 

pub fn determine_audio_track_switch_strategy(
    needs_transcoding: bool,
    use_html5: bool,
) -> AudioTrackSwitchStrategy

Decide how to honour an audio-track change.

Arguments

• needs_transcoding - Whether the stream now playing is a server-side transcode, which carries exactly the one audio track it was built around.
• use_html5 - Whether the frontend <video> element is rendering.

TRACES: UR-021 | IR-019, DR-024, DR-258 | UT-232