useKeyDownHandlers: update to use testutils

Author: clairep94

client/common/useKeyDownHandlers.test.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import { render } from '@testing-library/react';
+import { render } from '../test-utils';
 import { useKeyDownHandlers } from './useKeyDownHandlers';
 import { isMac } from '../utils/device';