Delegate delayed leaves in LocalMember rather than LocalTransport

IMO this is where the delegation calls should have lived all along, since the leave event is part of the membership lifecycle, and we otherwise end up with an awkward hack to ignore transport updates.

Doing this now ensures that the client won't send any delegation requests if delegation is unsupported, and prepares the code for a future change in which we use the dedicated delegation endpoint from the CS API.

src/state/CallViewModel/CallViewModel.ts

@@ -493,16 +493,6 @@ export function createCallViewModel$(
       memberships$: memberships$,
       ownMembershipIdentity,
       client,
-      delayId$: scope.behavior(
-        (
-          fromEvent(
-            matrixRTCSession,
-            MembershipManagerEvent.DelayIdChanged,
-            // The type of reemitted event includes the original emitted as the second arg.
-          ) as Observable<[string | undefined, IMembershipManager]>
-        ).pipe(map(([delayId]) => delayId ?? null)),
-        matrixRTCSession.delayId ?? null,
-      ),
       roomId: matrixRoom.roomId,
       matrixRTCMode,
     });
@@ -583,10 +573,22 @@ export function createCallViewModel$(
       );
     },
     connectionManager,
+    client,
     matrixRTCSession,
-    localTransport$,
+    localTransport,
     roomId: matrixRoom.roomId,
     baseUrl: client.baseUrl,
+    ownMembershipIdentity,
+    delayId$: scope.behavior(
+      (
+        fromEvent(
+          matrixRTCSession,
+          MembershipManagerEvent.DelayIdChanged,
+          // The type of reemitted event includes the original emitted as the second arg.
+        ) as Observable<[string | undefined, IMembershipManager]>
+      ).pipe(map(([delayId]) => delayId ?? null)),
+      matrixRTCSession.delayId ?? null,
+    ),
     matrixRTCMode,
     logger: logger.getChild(`[${Date.now()}]`),
   });