Change icons in web UI (#27385)

Co-authored-by: Renaud Chaput <renchap@gmail.com>

app/javascript/mastodon/features/ui/util/react_router_helpers.jsx

@@ -6,7 +6,7 @@ import { Switch, Route, useLocation } from 'react-router-dom';
 import StackTrace from 'stacktrace-js';
 
 import BundleColumnError from '../components/bundle_column_error';
-import ColumnLoading from '../components/column_loading';
+import { ColumnLoading } from '../components/column_loading';
 import BundleContainer from '../containers/bundle_container';
 
 // Small wrapper to pass multiColumn to the route components