useModalClose: update to use testutils

Author: clairep94

client/common/useModalClose.test.tsx

@@ -1,5 +1,5 @@
-import React, { useRef, useEffect } from 'react';
-import { render, fireEvent } from '@testing-library/react';
+import React from 'react';
+import { render, fireEvent } from '../test-utils';
 import { useModalClose } from './useModalClose';
 import { useKeyDownHandlers } from './useKeyDownHandlers';