Flutter web:url_launcher_web未在浏览器中启动电子邮件

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:url_launcher/url_launcher.dart' as url_launcher;

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Flutter Web Email Launcher'),
        ),
        body: Center(
          child: ElevatedButton(
            onPressed: () {
              launchEmail();
            },
            child: Text('Launch Email'),
          ),
        ),
      ),
    );
  }

  void launchEmail() async {
    const emailUrl = 'mailto:test@example.com';
    try {
      await url_launcher.launch(emailUrl);
    } catch (e) {
      print('Error launching email: $e');
    }
  }
}

dependencies:
  url_launcher: ^6.0.0