cmdUpdateAudioSettings was invoking four v2 commands that do not exist:
- v2_set_audio_backend -> v2_set_audio_backend_type
- v2_set_audio_device -> v2_set_audio_output_device
- v2_set_exclusive_mode -> v2_set_audio_exclusive_mode
- v2_set_dac_passthrough -> v2_set_audio_dac_passthrough
Also corrects the parameter for set_audio_output_device, which expects
'device' (not 'deviceName'). The other three already use the correct
parameter names. The function currently has no callers, but keeping the
shape correct prevents a future caller from hitting silent failures.
cc