message: Fix test failures: provide isIntialSyncComplete on mock client
diff: @@ -94,6 +94,8 @@ describe("RoomViewStore", function () {
  getDeviceId: jest.fn().mockReturnValue("ABC123"),
  sendStateEvent: jest.fn().mockResolvedValue({}),
  supportsThreads: jest.fn(),
  + isInitialSyncComplete: jest.fn(),
  + relations: jest.fn(),
  });
  const room = new Room(roomId, mockClient, userId);
  const room2 = new Room(roomId2, mockClient, userId);
  