setting <Location Path="xxxx"> in web.config results in 404 from IISExpress

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Describe the bug

I am unable to exclude windows authentication for a path (healthcheck) for my aspnet app.

In launchsettings we have enabled windows authentication:
```
"iisSettings": {
"windowsAuthentication": true,
"anonymousAuthentication": false,
"iisExpress": {
"applicationUrl": "http://localhost:54594",
"sslPort": 44319
}
```

Then, I added an element in webconfig to enable anonymous access:
```










```

With this in place I have 404 error when accessing the path, the error comes from IIS. As if all handlers were wiped out.
```
curl https://localhost:44319/health
curl : HTTP Error 404.0 - Not Found
```

### Expected Behavior

I should see healthcheck page not 404 error from IISExpress.

### Steps To Reproduce

_No response_

### Exceptions (if any)

_No response_

### .NET Version

8.0.101

### Anything else?

IDE: Rider