fix: class of the same unqualified name in package inside module (see MultiFileTest.testClassOfTheSameNameInAnotherPackage)
We don't ever try to use meaningful var name for temp class declaration — we remember about incremental compilation inline final class declaration don't generate scope function if we don't need it
failed and fixed test: fast fix Kt817 (we must investigate, actually, it seems dart ast bug — we must have ability to declare name in our scope without check the same name in the parent scope)
perfomance: delete ClassSortingUtils, we don't need it
develar