runtime: Quic Support Check Throws Exception Breaking ASP.NET core

Description

I am attempting to run the ASP.NET Core Test server in a wasm context. When doing so I get the following error.

service-worker.js:86 Error: System.PlatformNotSupportedException: System.Net.Quic is not supported on this platform.
   at System.Net.Quic.QuicImplementationProviders.get_Default()
   at Microsoft.AspNetCore.Hosting.WebHostBuilderQuicExtensions.UseQuic(IWebHostBuilder hostBuilder)
   at Microsoft.AspNetCore.Hosting.WebHostBuilderKestrelExtensions.UseKestrel(IWebHostBuilder hostBuilder)
   at Microsoft.AspNetCore.Hosting.WebHostBuilderKestrelExtensions.UseKestrel(IWebHostBuilder hostBuilder, Action`2 configureOptions)
   at Microsoft.AspNetCore.WebHost.ConfigureWebDefaults(IWebHostBuilder builder)
   at Microsoft.Extensions.Hosting.GenericHostBuilderExtensions.<>c__DisplayClass0_0.<ConfigureWebHostDefaults>b__0(IWebHostBuilder webHostBuilder)
   at Microsoft.Extensions.Hosting.GenericHostWebHostBuilderExtensions.ConfigureWebHost(IHostBuilder builder, Action`1 configure, Action`1 configureWebHostBuilder)
   at Microsoft.Extensions.Hosting.GenericHostWebHostBuilderExtensions.ConfigureWebHost(IHostBuilder builder, Action`1 configure)
   at Microsoft.Extensions.Hosting.GenericHostBuilderExtensions.ConfigureWebHostDefaults(IHostBuilder builder, Action`1 configure)

Here is the source that triggers this error.

    public static class WebHostBuilderQuicExtensions
    {
        [RequiresPreviewFeatures]
        public static IWebHostBuilder UseQuic(this IWebHostBuilder hostBuilder)
        {
            if (QuicImplementationProviders.Default.IsSupported)
            {
                return hostBuilder.ConfigureServices(services =>
                {
                    services.AddSingleton<IMultiplexedConnectionListenerFactory, QuicTransportFactory>();
                });
            }

            return hostBuilder;
        }
....
}

This seems like a logic error as the whole point of having the IsSupported method as the exception prevents the supported check. This prevents starting the web host in any non windows context.

Reproduction Steps

Working on a repro.

Expected behavior

The QuicImplementationProviders.Default should not throw an exception on unsupported platforms.

Or

The calling AspNet core startup logic should handle the exception.

Actual behavior

The supported check is never actually allowed to be called resulting in an unhandled exception deep in the configuration call stack which cannot be handled in way that allows the server to actually start. This would probably manifest when running not just on wasm but running ASP.NET core on older windows or linux platforms that do not support http3.

Regression?

No response

Known Workarounds

No response

Configuration

No response

Other information

No response