[View Complete Diff of Changes](https://github.com/dotnet/fsharp/compare/b9c0f04d0ec3ec292bde52acccbc41c208931f07...858e2df9631a385cbddef62eeb424f9b3071b031?w=1) - [Make in-memory cross-project references the only option (by removing the switch) (#15116) (15120)](https://github.com/dotnet/fsharp/pull/15120)