mediasoup is not compatible with the UDP port multiplexing that LiveKit
uses when the `udp_port` setting is enabled, so it won't work anyways
and it's better to bt consistent between both Pion and mediasoup
engines.
Also extend the port range to 100 ports, given that now the multiplexing
feature won't be in use. 100 seems like a big enough range for local
development.
While default LiveKit's value is error if nothing is provided, warn is a
better value for this option, because it allows seeing issues that
otherwise might happen and be invisible, such as:
WARN openvidu.transport.pion.pc webrtc/peerconnection.go:1280 RTPReceiver Receive failed: WebRtcTransport.Produce(): ssrc already exists in RTP listener [ssrc:3696700572] [method:transport.produce] {..., "transport": "PUBLISHER"}
