Unable to add a project of the same name

### Short summary

Unable to add a new project that has the same name as an existing project

### Affected version or release

1.1.14

### Installation context

_No response_

### What happened?

Let's say I have a project named `my-project` already registered in the app (from the Windows host). I then attempt to add a project named `my-project`, but this is in the WSL host. The WSL host version of `my-project` does not load in the app, even though it is allegedly registered in the WSL environment in GitHub Copilot Apps's settings.

### Steps to reproduce

1. Add a project that is on the Windows host.
2. Enable "WSL host (Preview)" feature
3. Restart GitHub Copilot App
4. From Environments in Settings , add the "Ubuntu (default)" host
5. From the "WSL: Ubuntu" remote host, add a project of the same name (as one added in step 1) on the WSL host
6. Observe the WSL host project is not added to the project list

### Expected behavior

I would expect the WSL hosted project to be added to the project list. If the project cannot be added, provide a helpful error message.

### Additional context

Potentially related to #90

https://github.com/user-attachments/assets/17e2ab09-7737-49a3-9302-0a65213d66da

通过 Settings > Environments 重现该问题：添加一个 Windows 项目，启用 WSL 主机，然后添加同名的 Ubuntu 项目。跟踪来自 WSL: Ubuntu 远程主机的项目是如何添加到项目列表中的；当项目在名称重复的情况下仍然出现，或出现有帮助的错误说明无法添加该项目的原因时，即表示完成。

由索引模型根据 Issue 内容生成。