Restore support for local class literals in annotation arguments

This was broken in c1ab08c8ce where we started to represent KClassValue
as a ClassId of the referenced class + number of times it's been wrapped
into kotlin.Array. Local classes do not have a sane ClassId, so in this
change we restore the old behavior by representing KClassValue with a
sealed class value instead

 #KT-29891 Fixed

idea/testData/checker/ResolveTypeInAnnotationArgumentRuntime.kt

@@ -2,4 +2,4 @@ import kotlin.reflect.KClass
 
 annotation class Ann(val value: KClass<*>)
 
-@Ann(<error descr="[ANNOTATION_ARGUMENT_MUST_BE_KCLASS_LITERAL] An annotation argument must be a class literal (T::class)">Array<<error descr="[UNRESOLVED_REFERENCE] Unresolved reference: String123">String123</error>>::class</error>) class A
+@Ann(Array<<error descr="[UNRESOLVED_REFERENCE] Unresolved reference: String123">String123</error>>::class) class A