MatrixRTC: MembershipManager test cases and deprecation of MatrixRTCSession.room (#4713)

* WIP doodles on MembershipManager test cases

* .

* initial membership manager test setup.

* Updates from discussion

* revert renaming comments

* remove unused import

* fix leave delayed event resend test.
It was missing a flush.

* comment out and remove unused variables

* es lint

* use jsdom instead of node test environment

* remove unused variables

* remove unused export

* temp

* review

* fixup tests

* more review

* remove wait for expect dependency

* flatten tests and add comments

* add more leave test cases

* use defer

* remove @jest/environment dependency

* Cleanup awaits and Make mock types more correct.
Make every mock return a Promise if the real implementation does return a pormise.

* remove flush promise dependency

* add linting to matrixrtc tests

* Add fix async lints and use matrix rtc logger for test environment.

* prettier

* change to MatrixRTCSession logger

* make accessing the full room deprecated

* remove deprecated usage of full room

* Clean up the deprecation

---------

Co-authored-by: Hugh Nimmo-Smith <hughns@matrix.org>

src/client.ts

@@ -3414,7 +3414,11 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
      *   Check progress on [MSC4140](https://github.com/matrix-org/matrix-spec-proposals/pull/4140) for more details.
      */
     // eslint-disable-next-line
-    public async _unstable_updateDelayedEvent(delayId: string, action: UpdateDelayedEventAction): Promise<EmptyObject> {
+    public async _unstable_updateDelayedEvent(
+        delayId: string,
+        action: UpdateDelayedEventAction,
+        requestOptions: IRequestOpts = {},
+    ): Promise<EmptyObject> {
         if (!(await this.doesServerSupportUnstableFeature(UNSTABLE_MSC4140_DELAYED_EVENTS))) {
             throw Error("Server does not support the delayed events API");
         }
@@ -3426,6 +3430,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
             action,
         };
         return await this.http.authedRequest(Method.Post, path, undefined, data, {
+            ...requestOptions,
             prefix: `${ClientPrefix.Unstable}/${UNSTABLE_MSC4140_DELAYED_EVENTS}`,
         });
     }