[soa] WebRTC Problems in Firefox

[lassertos]

There are multiple problems regarding WebRTC in Firefox:

• TURN Server is marked as defective sporadically
• Media is not transported correctly
• 'connectionState'-Property is not supported

[lassertos]

The connectionState property should now also be supported by Firefox (v113.0+): https://www.mozilla.org/en-US/firefox/113.0/releasenotes/