Peer.cpp: clarify how setCapabilities() behaves.
Peer.cpp: clarify how setCapabilities() behaves.

versatica/mediasoup,versatica/mediasoup,ibc/MediaSoup,ibc/MediaSoup,versatica/mediasoup,versatica/mediasoup,versatica/mediasoup,versatica/mediasoup,versatica/mediasoup,versatica/mediasoup,versatica/mediasoup,ibc/MediaSoup