如何仅为颤动中的TextField禁用splashColor？

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        // 创建自定义的Theme
        textTheme: Theme.of(context).textTheme,
        primaryColor: Colors.blue,
        accentColor: Colors.blueAccent,
        scaffoldBackgroundColor: Colors.white,
        // 修改TextField的Theme
        inputDecorationTheme: InputDecorationTheme(
          // 设置splashColor为透明色
          splashColor: Colors.transparent,
        ),
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Disable splashColor for TextField'),
      ),
      body: Center(
        child: TextField(
          decoration: InputDecoration(
            labelText: 'Enter text',
          ),
        ),
      ),
    );
  }
}