I can generate an auto-compiled model if I use 9.0.0-preview.4.24205.3, but it doesn't work when I use 9.0.0-rc.2.24474.1.
I can generate an auto-compiled model, but only after running dotnet publish.
https://learn.microsoft.com/en-us/ef/core/what-is-new/ef-core-9.0/whatsnew#msbuild-integration