fix: import waitFor from a proper source

src/courseware/CoursewareContainer.test.jsx

@@ -3,7 +3,7 @@ import { getAuthenticatedHttpClient } from '@edx/frontend-platform/auth';
 import { AppProvider } from '@edx/frontend-platform/react';
 import { waitForElementToBeRemoved, fireEvent } from '@testing-library/dom';
 import '@testing-library/jest-dom/extend-expect';
-import { render, screen, waitFor } from '@testing-library/react';
+import { render, screen } from '@testing-library/react';
 import React from 'react';
 import {
   BrowserRouter, MemoryRouter, Route, Routes,
@@ -13,7 +13,7 @@ import MockAdapter from 'axios-mock-adapter';
 
 import { UserMessagesProvider } from '../generic/user-messages';
 import tabMessages from '../tab-page/messages';
-import { initializeMockApp } from '../setupTest';
+import { initializeMockApp, waitFor } from '../setupTest';
 import { DECODE_ROUTES } from '../constants';
 
 import CoursewareContainer from './CoursewareContainer';