[deeplink] Path of my flutter project is not recognized

I'm trying to debug deep links as per this documentation https://docs.google.com/document/d/1fnWe8EpZleMtSmP0rFm2iulqS3-gA86z8u9IsnXjJak

It's asked to enter the path of the local project, but it seems my project cannot be well scanned. I'm always having the error dialog "You selected a non Flutter project".

My path looks like this
/Users/USERNAME/dev/MyApp

What's wrong?
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**DevTools version**: 2.31.1
**IDE**: VSCode
**Connected Device**:
CPU / OS: arm64 (64 bit) android
Connected app type: Flutter native (debug build)
Dart Version: 3.3.4
Flutter Version: 3.19.6 / stable
Framework / Engine: 54e66469a9 / c4cd48e186

使用提供的 VSCode、Flutter 3.19.6、Dart 3.3.4 和 Android 详细信息，复现 DevTools 2.31.1 中通过 deep-link 选择项目路径的流程。从本地路径 /Users/USERNAME/dev/MyApp 和链接的调试文档开始；当能够识别有效的 Flutter 项目，而不是显示 "You selected a non Flutter project." 时，即表示完成。

由索引模型根据 Issue 内容生成。