Review simpler return value

Co-authored-by: Robin <[email protected]>

Author: toger5

test/ClientWidgetApi-test.ts

@@ -1529,7 +1529,7 @@ describe('ClientWidgetApi', () => {
         it('reads events from all rooms', async () => {
             const roomId = '!room:example.org';
             const otherRoomId = '!other-room:example.org';
-            jest.spyOn(clientWidgetApi,"getWidgetVersions").mockReturnValue(new Promise(r=>r([])));
+            jest.spyOn(clientWidgetApi,"getWidgetVersions").mockResolvedValue([]);
             const event = createRoomEvent({ room_id: roomId, type: 'net.example.test', content: 'test' });
             const otherRoomEvent = createRoomEvent({ room_id: otherRoomId, type: 'net.example.test', content: 'hi' });
             driver.getKnownRooms.mockReturnValue([roomId, otherRoomId]);