添加依赖后Flutter Web构建失败，提示dart:ffi未找到

添加syncfusion_flutter_datagrid、printing和pdf包后，执行Flutter Web构建时提示找不到dart:ffi。已尝试flutter clean && flutter pub get命令，也在pubspec.yml中添加了ffi依赖，问题仍未解决；即使移除syncfusion_flutter_datagrid包，错误依然存在。

Compiling lib/main.dart for the Web...                             16.0s
Target dart2js failed: Exception: Warning: The 'dart2js' entrypoint script is deprecated, please use 'dart compile js' instead.
/root/.pub-cache/hosted/pub.dartlang.org/archive-3.3.3/lib/src/util/aes_decrypt.dart:1:8:
Error: Not found: 'dart:ffi'
import 'dart:ffi';
       ^
/root/.pub-cache/hosted/pub.dartlang.org/syncfusion_flutter_datagrid-20.3.56/lib/src/datagrid_widget/widgets/cell_widget.dart:695:19:
Warning: Operand of null-aware operation '!' has type 'OverlayState' which excludes null.
 - 'OverlayState' is from 'package:flutter/src/widgets/overlay.dart' ('/usr/local/flutter/packages/flutter/lib/src/widgets/overlay.dart').
          Overlay.of(context)!.context.findRenderObject()! as RenderBox;
                  ^
Error: Compilation failed.

Exception: Failed to compile application for the Web.
The command '/bin/sh -c flutter build web' returned a non-zero code: 1

mark@mark-desktop:~/dev/example/cmd/client$ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.3.7, on Ubuntu 22.04.1 LTS 5.15.0-52-generic, locale en_AU.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
[✓] Chrome - develop for the web
[✓] Linux toolchain - develop for Linux desktop
[✓] Android Studio (version 2021.3)
[✓] VS Code
[✓] Connected device (2 available)
[✓] HTTP Host Availability

• No issues found!

• 问题根源：报错指向archive-3.3.3包引入了dart:ffi，但dart:ffi是仅支持移动端/桌面端的API，Web环境无法兼容。该包是由你引入的printing或pdf等依赖间接拉取的。
• 具体解决步骤：
  1. 执行flutter pub deps命令，查看依赖树，确认archive包的引入路径（验证是哪个依赖触发了不兼容版本）。
  2. 在pubspec.yml中添加dependency_overrides，强制指定兼容Web的archive版本（推荐3.1.2，该版本未引入dart:ffi）：

     dependency_overrides:
       archive: 3.1.2
     

  3. 重新执行依赖安装：

     flutter clean && flutter pub get
     

  4. 再次尝试构建Web：

     flutter build web
     

• 关于Syncfusion的警告：那个空安全操作符的警告不影响构建，可暂时忽略，或升级syncfusion_flutter_datagrid到最新稳定版来修复。

内容的提问来源于stack exchange，提问作者markhorrocks