如何仅'setState‘到appBar图标而不是'notifyListeners’

dependencies:
  flutter:
    sdk: flutter
  provider: ^6.0.0

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

class AppBarIconState extends ChangeNotifier {
  IconData iconData = Icons.favorite;

  void updateIcon(IconData newIcon) {
    iconData = newIcon;
    notifyListeners();
  }
}

AppBar(
  title: Text('My App'),
  actions: [
    Consumer<AppBarIconState>(
      builder: (context, state, child) {
        return IconButton(
          icon: Icon(state.iconData),
          onPressed: () {
            // 更新图标状态
            state.updateIcon(Icons.star);
          },
        );
      },
    ),
  ],
),