ILLink analyzer and code fixer passed twice to the csc

Using very recent SDK 8.0.0-preview.4.23177.1

```console
dotnet new api -aot
dotnet publish /bl
```

Open the `msbuild.binlog`:
![image](https://user-images.githubusercontent.com/10670590/228829151-85b6c609-90f1-4774-8a87-5660fd5f906e.png)

This means that any warning produced by the ILLink analyzer is reported twice.