`CreateInstanceUnitTest` and `GenerateLocalOfferUnitTest` hang

[lostmsu]

Known workaround is to Dispose things:

RTPSession rtpSession = new RTPSession(true, true, true);
to:
using RTPSession rtpSession = new RTPSession(true, true, true);

and:

var rtpIceChannel = new RtpIceChannel(null, RTCIceComponent.rtp, null);

to:

using var rtpIceChannel = new RtpIceChannel(null, RTCIceComponent.rtp, null);

For the second hang, RTCPeerConnectionUnitTest.GenerateLocalOfferUnitTest:

RTCPeerConnection pc = new RTCPeerConnection(null);

changed to:

using RTCPeerConnection pc = new RTCPeerConnection(null);