Fix import order with ESLint

Port d27216dc46 to glitch-soc

app/javascript/flavours/glitch/components/status_header.jsx

@@ -1,6 +1,7 @@
 //  Package imports.
-import { PureComponent } from 'react';
 import PropTypes from 'prop-types';
+import { PureComponent } from 'react';
+
 import ImmutablePropTypes from 'react-immutable-proptypes';
 
 //  Mastodon imports.