adding missing const

frontend/lib/modules/new_trip_options_button.dart

@@ -7,7 +7,7 @@ import 'package:flutter/material.dart';
 class NewTripOptionsButton extends StatefulWidget {
   final Trip trip;
 
-  const NewTripOptionsButton({required this.trip});
+  const NewTripOptionsButton({super.key, required this.trip});
 
   @override
   State<NewTripOptionsButton> createState() => _NewTripOptionsButtonState();
@@ -33,7 +33,7 @@ class _NewTripOptionsButtonState extends State<NewTripOptionsButton> {
           },
           icon: const Icon(Icons.add),
           label: const AutoSizeText('Set preferences')
-        ); 
+        );
       }
     );
   }