[NETE2ESDK] Empty runtime folders are still present after uninstalling the runtimes

### Describe the bug.

Empty runtime folders are still present after uninstalling the runtimes

### Please attach log file(s) here if you have any.

The log file location should be copied to your clipboard if you came from VS Code.

[Bug2267.zip](https://github.com/user-attachments/files/20098947/Bug2267.zip)

### Reproduction Steps

1. Run the 'Sample: Acquire .NET runtime' command and enter the runtime version or Run the `Sample: Concurrently acquire all 2.X .NET Core runtimes' command.
2. Run the ‘.NET Install Tool: Uninstall .NET’ command to uninstall the runtime. In output, it show a message of uninstallation success.
3. Go to the runtime installation path 'c:\Users\{ USERNAME }\AppData\Roaming\Code\User\globalStorage\ms-dotnettools.sample-extension\.dotnet\' and observe

### Expected Behavior

The runtime is uninstalled succeed and the related files are deleted.

### Exceptions & Errors (if any)

The runtime folder is still present even it is empty.


### .NET Install Tool Version

v2.3.4

### Your operating system? Please provide more detail, such as the version and or distro above.

N/A

### VS Code Version

1.99.3