[BUG] Inherited theme can break the styling of the hyperlink menu

[andrew-moreno]

Describe the bug
Applying certain inputDecorationTheme styles to the app's theme can break the styling in the hyperlink menu.

Example
Applying the following styles to the inputDecorationTheme will display the hyperlink menu in the following way.

enabledBorder: OutlineInputBorder(),
isDense: true,
constraints: BoxConstraints(minHeight: 40),
filled: true,
fillColor: Colors.white,

Flutter Doctor

[✓] Flutter (Channel stable, 3.22.1, on macOS 14.4.1 23E224 darwin-arm64, locale en-CA)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 15.0)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2022.3)
[✓] VS Code (version 1.90.1)
[✓] Connected device (3 available)
[✓] Network resources

Code to reproduce

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

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

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  late QuillEditorController controller;

  @override
  void initState() {
    controller = QuillEditorController();

    super.initState();
  }

  @override
  void dispose() {
    /// please do not forget to dispose the controller
    controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: MaterialApp(
        theme: ThemeData(
          inputDecorationTheme: const InputDecorationTheme(
            enabledBorder: OutlineInputBorder(),
            isDense: true,
            constraints: BoxConstraints(minHeight: 40),
            filled: true,
            fillColor: Colors.white,
          ),
        ),
        home: Scaffold(
          body: Column(
            children: [
              ToolBar(controller: controller),
              Expanded(
                child: QuillHtmlEditor(
                  controller: controller,
                  minHeight: 500,
                  loadingBuilder: (context) {
                    return const Center(
                      child: CircularProgressIndicator(
                        strokeWidth: 1,
                        color: Colors.red,
                      ),
                    );
                  },
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}