Recover mute state for moderator when returning from breakout's audio transfer

.../imports/ui/components/audio/audio-controls/container.jsx

bigbluebutton-html5/imports/ui/components/audio/service.js

...n-html5/imports/ui/components/breakout-room/component.jsx

...n-html5/imports/ui/components/breakout-room/container.jsx

...uebutton-html5/imports/ui/services/audio-manager/index.js