Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

When a wwwroot directory exists, calling the WebHost.ConfigureAppConfiguration method throws a System.NotSupportedException error because of the web root having changed, despite that not happening in the user code.

Expected Behavior

I would expect to be able to call the WebHost.ConfigureAppConfiguration method without it throwing an exception when the web root is not changed in the configuration delegate.

Steps To Reproduce

To reproduce, simply run the project (dotnet run). The following program (plus a wwwroot directory) is enough to trigger it.

var builder = WebApplication.CreateBuilder(args);

// The configuration delegate, clearly, does not do anything
// Commenting out the call to `ConfigureAppConfiguration` "solves" the issue
builder.WebHost.ConfigureAppConfiguration(
    (ctx, config) => { });

var app = builder.Build();

app.MapGet("/", () => "hello!");

app.Run();

A project to reproduct the issue lives at https://github.com/aurecchia/aspnetcore-wwwroot-confusion

Exceptions (if any)

Unhandled exception. System.NotSupportedException: The web root changed from "/home/<username>/aspnetcore-wwwroot-confusion/wwwroot" to "/home/<username>/aspnetcore-wwwroot-confusion/". Changing the host configuration using WebApplicationBuilder.WebHost is not supported. Use WebApplication.CreateBuilder(WebApplicationOptions) instead.
   at Microsoft.AspNetCore.Builder.ConfigureWebHostBuilder.ConfigureAppConfiguration(Action`2 configureDelegate)
   at Program.<Main>$(String[] args) in /home/<username>/aspnetcore-wwwroot-confusion/Program.cs:line 3

.NET Version

6.0.100

Anything else?

No response