Create class descriptors for local classes in illegal positions

Typecheck code in illegal selector position
Fixes exceptions on "val p = A.class" erroneous code

idea/testData/checker/regression/ClassDeclarationAfterDot2.kt

@@ -0,0 +1,9 @@
+class A
+
+fun f() {
+    A.<error>class B {
+        fun f() {
+            f()
+        }
+    }</error>
+}