fix(lieferung): lazy load neu component in deliveryId route

src/routes/lieferung/_deliveryId.jsx

@@ -1,4 +1,6 @@
+import { lazy } from 'react';
 import { withManifestId } from '../../components/manifest';
-import LieferungNeuPage from './neu';
+
+const LieferungNeuPage = lazy(() => import('./neu'));
 
 export default withManifestId('deliveryId', LieferungNeuPage);