KSP: a top-level function in the root package produces an unresolved reference in the generated fragment #319

Found while building fixtures/ios-consumer (#90). A public top-level 'fun runProbe()' with no package declaration is exported; the generated fragment (package python.multiplatform.generated.fragments) calls 'runProbe()' unqualified, and Kotlin cannot import a root-package declaration, so compileKotlin fails: 'Unresolved reference runProbe'. Completion: either bind root-package declarations correctly (e.g. generate the fragment for them in the root package) or skip them with a KSP warning naming the declaration; a processor test with a root-package function, red before.