Incorrect global:: for generic types

[pranavkm]

• https://github.com/dotnet/aspnetcore/pull/39853/files#r798213371
• https://github.com/dotnet/aspnetcore/pull/39853/files#diff-bce35be6a0135547b825d17bd055153b055833f7eae2a837ec13ab7fdf51d2e2R6

The error:

C:\github\aspnetcore\src\Components\WebAssembly\testassets\Wasm.Authentication.Client\Microsoft.NET.Sdk.Razor.SourceGenerators\Microsoft.NET.Sdk.Razor.SourceGenerators.RazorSourceGenerator\Pages_Authentication_razor.g.cs(103,152): error CS0400: The type or namespace name 'RemoteAppState' could not be found in the global namespace (are you missing an assembly reference?)

From the error, it looks like we're generating global::RemoteAppState

[pranavkm]

FYI @javiercn

[javiercn]

@pranavkm thanks pranav, I'll take a look.

[javiercn]

Mini repro:

// <auto-generated/>
#pragma warning disable 1591
namespace Test
{
    #line hidden
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Threading.Tasks;
    using Microsoft.AspNetCore.Components;
    public partial class TestComponent : global::Microsoft.AspNetCore.Components.ComponentBase
    {
        #pragma warning disable 1998
        protected override void BuildRenderTree(global::Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder __builder)
        {
            __builder.OpenComponent<global::Test.MyComponent<CustomType>>(0);
            __builder.AddAttribute(1, "Item", global::Microsoft.AspNetCore.Components.CompilerServices.RuntimeHelpers.TypeCheck<global::CustomType>(
#nullable restore
#line 1 "x:\dir\subdir\Test\TestComponent.cshtml"
                                      new CustomType()

#line default
#line hidden
#nullable disable
            ));
            __builder.CloseComponent();
        }
        #pragma warning restore 1998
    }
}
#pragma warning restore 1591

The issue is the global:: in the CustomType on the TypeCheck call

__builder.AddAttribute(1, "Item", global::Microsoft.AspNetCore.Components.CompilerServices.RuntimeHelpers.TypeCheck<global::CustomType>(