Use of Type.GetType in OverrideRuntimeNodeWriterTemplateTypeNamePhase causes crash when using ILMerge

[General-Fault]

Describe the bug
RazorLight cannot be used in an application that has been merged into a single assembly using ILMerge. ILMerge combines all referenced assemblies into one. This has the side-effect of changing the assembly name for all types that have been merged. So, when the OverrideRuntimeNodeWriterTemplateTypeNamePhase attempts to locate the Microsoft.AspNetCore.Razor.Language.DefaultRazorCSharpLoweringPhase type in the Register method, it fails because the AssemblyQualifiedName for that type no longer contains "Microsoft.AspNet.Core.Razor.Language" as the assembly name. The result is that OverrideRuntimeNodeWriterTemplateTypeNamePhase.Register throws a RazorLightException with the error "SetTemplateTypePhase cannot be registered as DefaultRazorCSharpLoweringPhase could not be located".

See also #322

To Reproduce
Create a console application for .Net Framework 4.8 using RazorLight. I used the RazorLightSandbox and updated the async using statements in Main() to comply with C#7.3.
Install the ILMerge.MSBuild.Task package (see https://github.com/emerbrito/ILMerge-MSBuild-Task/wiki)
Compile the project. There should be an ILMerge directory in the output.

Run the generated executable.

You should see the error

Exception
System.AggregateException: One or more errors occurred. ---> RazorLight.RazorLightException: SetTemplateTypePhase cannot be registered as DefaultRazorCSharpLoweringPhase could not be located
at RazorLight.Instrumentation.OverrideRuntimeNodeWriterTemplateTypeNamePhase.Register(RazorProjectEngineBuilder builder)
at RazorLight.DefaultRazorEngine.<>c__DisplayClass1_0.<get_Instance>b__0(RazorProjectEngineBuilder builder)
at Microsoft.AspNetCore.Razor.Language.RazorProjectEngine.Create(RazorConfiguration configuration, RazorProjectFileSystem fileSystem, Action`1 configure)
at RazorLight.DefaultRazorEngine.get_Instance()
at RazorLight.RazorLightEngineBuilder.Build()

Expected behavior
The library should be usable in an assembly that has been merged with ILMerge.

Information (please complete the following information):

• OS: Windows 10 LTSC (1908)
• Platform: .NET Framework 4.8
• RazorLight version: 2.3.1 (note, this isn't fixed by Use of Type.GetType in OverrideRuntimeNodeWriterTemplateTypeNamePhase causes crash in Azure functions #322 currently unreleased)
• Are you using the OFFICIAL RazorLight package? https://www.nuget.org/packages/razorlight: Yes
• Visual Studio version: Visual Studio Pro [ e.g Visual Studio Community 17.8.5 ]

Additional context
The application that this applies to is a portable tool used by our development team to create API documentation. The tool must be a single executable with all dependencies "wrapped in". Unfortunately, other dependencies of this tool are still targeting the .Net Framework v4.8.

[General-Fault]

Admittedly, my "steps to reproduce" are not ideal. I will see if I can put together a simple project that replicates this behavior.

[toddams]

ILMerge utility is not supported and I don't recall any plans to support it. Considering that it has been deprecated, I'm closing this one as "won't do"