사용하지 않는 파일 정리 전 백업 (Phase 10 완료 후 상태)

lib/screens/equipment/widgets/custom_dropdown_field.dart

@@ -16,7 +16,7 @@ class CustomDropdownField extends StatefulWidget {
   final GlobalKey fieldKey;
 
   const CustomDropdownField({
-    Key? key,
+    super.key,
     required this.label,
     required this.hint,
     required this.required,
@@ -29,7 +29,7 @@ class CustomDropdownField extends StatefulWidget {
     required this.onDropdownPressed,
     required this.layerLink,
     required this.fieldKey,
-  }) : super(key: key);
+  });
 
   @override
   State<CustomDropdownField> createState() => _CustomDropdownFieldState();