Refactor local transport

- use the new domain logic to discover the transport
- then try to authenticate
- Also fix the bug in multi sfu where active$ not updated on delayId change

src/state/CallViewModel/localMember/LocalTransport.test.ts

@@ -544,7 +544,7 @@ describe("LocalTransport", () => {
     });
   });
 
-  it.fails(
+  it(
     "should not update advertised transport on delayID changes, but active should update",
     async () => {
       // For simplicity, we'll just use the config livekit