Adjusts the conference-only microphone energy gate / sensitivity level
for this member. Routes through the conferencing mix engine
(signalwire.conferencing member.set_input_sensitivity) and has no effect
on 1:1 WebRTC calls — for those, use browser audio constraints via
Call.setNoiseSuppression / Call.setAutoGainControl.
This is not a local PC mic gain control; it only changes how the server-side mixer decides to open the mic gate on this participant.
Sensitivity level as understood by the conference engine (integer, larger values are more sensitive).
Promise<void>
Participant.setAudioInputSensitivity