[NETSDKE2E][v9.9] C# Dev Kit doesn't recognize NET11 SDK even NET11 is already installed.

[vwenchen]

Regression Info

No regression info since it's new feature from this build.

Describe the issue

C# Dev Kit doesn't recognize NET11 SDK even NET11 is already installed.

Steps to reproduce

1. Clean machine: MAC
2. Ensure only .NET 11 is installed manually
3. Install VS Code Insider - 1.137.0 and csdevkit-win32-arm64-9.9.510-ge32b16.vsix
4. Create a new Folder
5. Open it in VSCode
6. F1-> C#: Check Health

Expected behavior

C# Dev Kit can recognize NET11 SDK that installed manually.

Actual behavior

C# Dev Kit doesn't recognize NET11 SDK

[vwenchen]

Not repro on csdevkit-darwin-arm64-9.9.522-g170457.vsix, close it.