"Use auto property" not offered for System.Guid property depending on target framework

**Version Used**: 17.13.0 Preview 2.1

Not offered here, but should be. Changing target framework to `net8.0` causes it to be offered.

```cs
using System;

class C
{
    private Guid a;
    public Guid A => a;
}
```

```xml
<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net48</TargetFramework>
    <LangVersion>preview</LangVersion>
  </PropertyGroup>

</Project>
```