test: keep matrix async listeners lint-safe

(cherry picked from commit b7a38bdd2f)
(cherry picked from commit 5851bcfc58)

extensions/matrix/src/matrix/monitor/auto-join.test.ts

@@ -17,7 +17,12 @@ function createClientStub() {
   const client = {
     on: vi.fn((eventName: string, listener: unknown) => {
       if (eventName === "room.invite") {
-        inviteHandler = listener as InviteHandler;
+        inviteHandler = async (roomId, inviteEvent) => {
+          (listener as (roomId: string, inviteEvent: unknown) => void)(roomId, inviteEvent);
+          await new Promise<void>((resolve) => {
+            setImmediate(resolve);
+          });
+        };
       }
       return client;
     }),

extensions/matrix/src/matrix/monitor/events.test.ts

@@ -217,6 +217,15 @@ function createHarness(params?: {
     throw new Error("room.event listener was not registered");
   }
 
+  const failedDecryptListener: FailedDecryptListener | undefined = listeners.has(
+    "room.failed_decryption",
+  )
+    ? async (roomId, event, error) => {
+        listeners.get("room.failed_decryption")?.(roomId, event, error);
+        await flushTasks();
+      }
+    : undefined;
+
   return {
     onRoomMessage,
     sendMessage,
@@ -234,9 +243,7 @@ function createHarness(params?: {
     roomDecryptedEventListener: listeners.get("room.decrypted_event") as
       | RoomEventListener
       | undefined,
-    failedDecryptListener: listeners.get("room.failed_decryption") as
-      | FailedDecryptListener
-      | undefined,
+    failedDecryptListener,
     verificationSummaryListener: listeners.get("verification.summary") as
       | VerificationSummaryListener
       | undefined,

extensions/matrix/src/matrix/monitor/events.ts

@@ -273,7 +273,7 @@ export function registerMatrixMonitorEvents(params: {
 
   client.on("room.failed_decryption", (roomId: string, event: MatrixRawEvent, error: Error) => {
     void runMonitorTask(
-      `failed decryption handler room=${roomId} id=${event.event_id ?? "unknown"}`,
+      `failed decrypt handler room=${roomId} id=${event.event_id ?? "unknown"}`,
       async () => {
         const failureState = postHealthySyncDecryptFailureTracker.recordFailure(
           roomId,