Support klib cross compilation

[eygraber]

Kotlin 2.1.0 introduced klib cross compilation that allows building a klib for any target on any host.

KSP2 recently started disabling tasks if they aren't on their native host. Can that change be rolled back to allow for klib cross compilation to work with KSP?

[eygraber]

Workaround is:

tasks.all {
  if(name.startsWith("kspKotlinIos")) {
    afterEvaluate {
      setOnlyIf { true }
    }
  }
}

[Ppeepost4489]

#2243