better linting

lib/features/core/widgets/state/multi_value_listenable_builder.dart

@@ -8,10 +8,13 @@ class MultiValueListenableBuilder extends StatelessWidget {
     required this.builder,
     this.child,
     super.key,
-  }) : assert(valueListenables.length != 0);
+  }) : assert(
+          valueListenables.length != 0,
+          'Attached valueListenables must not be empty',
+        );
 
   /// List of [ValueListenable]s to be listened to.
-  final List<ValueListenable> valueListenables;
+  final List<ValueListenable<dynamic>> valueListenables;
 
   /// The builder function to be called when value of any of the [ValueListenable] changes.
   /// The order of values list will be same as [valueListenables] list.