Enforce stricter rules for Typescript files (#24910)

app/javascript/mastodon/components/dropdown_menu.jsx

@@ -1,7 +1,7 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import ImmutablePropTypes from 'react-immutable-proptypes';
-import IconButton from './icon_button';
+import { IconButton } from './icon_button';
 import Overlay from 'react-overlays/Overlay';
 import { supportsPassiveEvents } from 'detect-passive-events';
 import classNames from 'classnames';