Could not load file or assembly 'Telerik.Windows.Documents.Flow

[sagittarius-rcoppins]

Describe the bug
When I run the below code, I get "Could not load file or assembly 'Telerik.Windows.Documents.Flow, Version=2020.3.1019.40..." This isn't even listed as a dependancy. Am I doing something wrong? I can't find any reference to this project even in the decompiled DLL, but can't get this DLL without subscribing to Telerik. Is there a way around this?

To Reproduce
I run the following in Asp.NET 4.8:

string appPath = System.Web.Hosting.HostingEnvironment.MapPath(@"\Views\Product");
var engine = new RazorLightEngineBuilder()
    .UseFileSystemProject(appPath)
    .SetOperatingAssembly(typeof(ShareBasketEmailViewModel).Assembly)
    .UseMemoryCachingProvider()
    .Build();
var result = engine.CompileRenderAsync("ShareBasketEmail.cshtml", model).GetAwaiter().GetResult();
return result;

Expected behavior
Not to receive the runtime error. result should be populated with the compiled ShareBasketEmail.cshtml with the data from model. Please see the attached redacted .csproj file:
Sitecore.Feature.Products.csproj.redacted.txt

Information (please complete the following information):

• OS: Windows 10
• Platform .NET Framework 4.8
• RazorLight version 2.3.1
• Are you using the OFFICIAL RazorLight package? Yes, from NuGet
• Visual Studio version 17.12.3

Additional context
Add any other context about the problem here.

[doxxx]

I'm facing a similar problem. A template is failing to parse because it can't find an assembly that is not referenced anywhere in my project.

[doxxx]

So I finally traced my issue to a project dependency that had the UseWPF property set. I removed that and rewrote the code to not require System.Windows.Media.Imaging and the issue went away.

However, I've encountered the issue again in another project, where none of the dependencies have UseWPF. In both the original case and this new one, the assembly that RazorLight is failing to find is System.Runtime.Serialization.Schema, Version=0.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a.