[Pitch] Make noasync annotation transitive

Evolution Pitches
21

I believe most of the issues we encountered were fixed in later Swift versions. We also fixed crashes caused by the misuse so it's been a while since I looked at them

22

But what exactly was fixed?

That there's now a warning? Or that this is no longer bad?

23

IIRC it produces a warning

24

I do not see a warning... testes this snippet on recent Swift versions on godbolt:

@available(*, noasync, message: "This can block the calling thread and should not be called in an async context", renamed: "asyncAlternative()")
func noAsyncFunc() {}

func regularFunction() {
  noAsyncFunc()
}

func doSomethingAsync() async {
  regularFunction()
}
25

This is not expected to produce a diagnostic, no.