Unit tests for the pieces that had none: which transport the local
member advertises (override, homeserver, fallback, none), what the js-sdk
join is called with, how a publish request becomes LiveKit capture and
publish options, and the room options the connection factory builds from
the initial requests and the media quality settings, including what a
resolved connection reports while it is up. The backend's `mediaFor` gains
the cases from Element Call's member matching tests: a member on another
transport, a member changing transport, and a member without one.
Timo K.
038991fa97