Remove stateful prerendering

Fixes: #12245
Fixes: #12630

This change removes stateful pre-rendering from Server-Side Blazor. This
means that when you render a component during the initial HTTP request,
we we will no longer preserve the component instances and their
parameters. While this feature was useful, it cause serious scalability
concerns.

This means that it will now be required to register "entry-point"
components in startup similar to client-side Blazor.

Author: Ryan Nowak

eng/ProjectReferences.props

@@ -101,7 +101,6 @@
     <ProjectReferenceProvider Include="Microsoft.AspNetCore.Razor" ProjectPath="$(RepoRoot)src\Razor\Razor\src\Microsoft.AspNetCore.Razor.csproj" RefProjectPath="$(RepoRoot)src\Razor\Razor\ref\Microsoft.AspNetCore.Razor.csproj" />
     <ProjectReferenceProvider Include="Microsoft.AspNetCore.Mvc.Abstractions" ProjectPath="$(RepoRoot)src\Mvc\Mvc.Abstractions\src\Microsoft.AspNetCore.Mvc.Abstractions.csproj" RefProjectPath="$(RepoRoot)src\Mvc\Mvc.Abstractions\ref\Microsoft.AspNetCore.Mvc.Abstractions.csproj" />
     <ProjectReferenceProvider Include="Microsoft.AspNetCore.Mvc.ApiExplorer" ProjectPath="$(RepoRoot)src\Mvc\Mvc.ApiExplorer\src\Microsoft.AspNetCore.Mvc.ApiExplorer.csproj" RefProjectPath="$(RepoRoot)src\Mvc\Mvc.ApiExplorer\ref\Microsoft.AspNetCore.Mvc.ApiExplorer.csproj" />
-    <ProjectReferenceProvider Include="Microsoft.AspNetCore.Mvc.Components.Prerendering" ProjectPath="$(RepoRoot)src\Mvc\Mvc.Components.Prerendering\src\Microsoft.AspNetCore.Mvc.Components.Prerendering.csproj" RefProjectPath="$(RepoRoot)src\Mvc\Mvc.Components.Prerendering\ref\Microsoft.AspNetCore.Mvc.Components.Prerendering.csproj" />
     <ProjectReferenceProvider Include="Microsoft.AspNetCore.Mvc.Core" ProjectPath="$(RepoRoot)src\Mvc\Mvc.Core\src\Microsoft.AspNetCore.Mvc.Core.csproj" RefProjectPath="$(RepoRoot)src\Mvc\Mvc.Core\ref\Microsoft.AspNetCore.Mvc.Core.csproj" />
     <ProjectReferenceProvider Include="Microsoft.AspNetCore.Mvc.Cors" ProjectPath="$(RepoRoot)src\Mvc\Mvc.Cors\src\Microsoft.AspNetCore.Mvc.Cors.csproj" RefProjectPath="$(RepoRoot)src\Mvc\Mvc.Cors\ref\Microsoft.AspNetCore.Mvc.Cors.csproj" />
     <ProjectReferenceProvider Include="Microsoft.AspNetCore.Mvc.DataAnnotations" ProjectPath="$(RepoRoot)src\Mvc\Mvc.DataAnnotations\src\Microsoft.AspNetCore.Mvc.DataAnnotations.csproj" RefProjectPath="$(RepoRoot)src\Mvc\Mvc.DataAnnotations\ref\Microsoft.AspNetCore.Mvc.DataAnnotations.csproj" />

eng/SharedFramework.Local.props

@@ -73,7 +73,6 @@
     <AspNetCoreAppReference Include="Microsoft.AspNetCore.Razor" />
     <AspNetCoreAppReference Include="Microsoft.AspNetCore.Mvc.Abstractions" />
     <AspNetCoreAppReference Include="Microsoft.AspNetCore.Mvc.ApiExplorer" />
-    <AspNetCoreAppReference Include="Microsoft.AspNetCore.Mvc.Components.Prerendering" />
     <AspNetCoreAppReference Include="Microsoft.AspNetCore.Mvc.Core" />
     <AspNetCoreAppReference Include="Microsoft.AspNetCore.Mvc.Cors" />
     <AspNetCoreAppReference Include="Microsoft.AspNetCore.Mvc.DataAnnotations" />