Fix apply TypeError shim when sending on data channels to FF >= 57 as well
Fix apply TypeError shim when sending on data channels to FF >= 57 as well

There's a bug in the implementation of FF 57, so DOMError is raised instead of TypeError. I hope we can land a hotfix for that but it shouldn't prevent us from merging this now.

webrtc/adapter,Acidburn0zzz/adapter,Acidburn0zzz/adapter,Acidburn0zzz/adapter,webrtc/adapter