opt.: use ValueBuilder

lib/view/widget/value_notifier.dart

@@ -0,0 +1,16 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+
+class ValueBuilder<T> extends ValueListenableBuilder<T> {
+  final ValueListenable<T> listenable;
+  final Widget Function() build;
+
+  ValueBuilder({
+    super.key,
+    required this.listenable,
+    required this.build,
+  }) : super(
+          valueListenable: listenable,
+          builder: (_, __, ___) => build(),
+        );
+}