Blazor CRUD scaffolding updates

#### I'm going to place everything that I find in this one issue (several comments). If you want me 🦖 to PR the updates, I can do it after I'm done writing a large tutorial that makes use of this scaffolding in a few weeks.

~Should the semicolons in the `Block` entries of the following file be there?~

* https://github.com/dotnet/Scaffolding/blob/d30f2948f82a5253cf1ddfbbf373fbba78bb5113/src/Scaffolding/VS.Web.CG.Mvc/Blazor/blazorWebCrudChanges.json#L10
* https://github.com/dotnet/Scaffolding/blob/d30f2948f82a5253cf1ddfbbf373fbba78bb5113/src/Scaffolding/VS.Web.CG.Mvc/Blazor/blazorWebCrudChanges.json#L17

~I think I received a double semicolon (unless it was due to a stray keystroke on my part 😈) ...~

```csharp
builder.Services.AddQuickGridEntityFrameworkAdapter();;
```

***Nevermind!*** The double-semicolon seems to have been a stray keystroke on my part.