Re-disable or disabled streams

[gfodor]

Before this PR, if you muted the mic via enableMicrophone(false) and then called setLocalMediaStream(stream) to say add a video track, the track replacement code re-enabled all the streams effectively unmuting you. I wasn't sure of the reason we previously were setting sender.track.enabled = true here, so perhaps this introduces a new issue, but the idea is to ensure that if the previous track was disabled we maintain that state when replacing it with a new track.

[mqp]

This seems reasonable. Unfortunately, I also don't recall why it was important to set enabled = true here, but it makes sense that I might have missed out on testing the problem case you described, so your change may well just be strictly better than the old code.

Thanks for noticing!

[vincentfretin]

Ah ah I was bit by this issue, now I'm using this in my code:

NAF.connection.adapter.setLocalMediaStream(mediaStream).then(() => { 
  NAF.connection.adapter.enableMicrophone(voiceEnabled);          
});