add initializeWidget to tests.

src/room/CallEventAudioRenderer.test.tsx

@@ -39,7 +39,8 @@ import {
   localRtcMember,
 } from "../utils/test-fixtures";
 import { MAX_PARTICIPANT_COUNT_FOR_SOUND } from "../state/CallViewModel/CallViewModel";
-
+import { initializeWidget } from "../widget";
+initializeWidget();
 vitest.mock("livekit-client/e2ee-worker?worker");
 vitest.mock("../useAudioContext");
 vitest.mock("../soundUtils");