Minor, update reflection tests on stdlib

Since functionFromStdlibSingleFileFacade.kt was introduced, lazyOf was
also moved to a multifile class, so we're using another function to test
that reflection on a single file package facade from stdlib works

compiler/testData/codegen/box/reflection/methodsFromAny/functionFromStdlibMultiFileFacade.kt

@@ -10,5 +10,8 @@ fun box(): String {
     val asIterable = List<Int>::asIterable
     assertEquals("fun kotlin.collections.Iterable<T>.asIterable(): kotlin.collections.Iterable<T>", asIterable.toString())
 
+    val lazyOf: (String) -> Lazy<String> = ::lazyOf
+    assertEquals("fun lazyOf(T): kotlin.Lazy<T>", lazyOf.toString())
+
     return "OK"
 }