Allow resolve class declarations in class objects

Use INACCESSIBLE_OUTER_CLASS_EXPRESSION error for marking already resolved elements

 #KT-3261 Fixed

compiler/testData/lazyResolve/namespaceComparator/resolveFunctionInsideClassObject.txt

@@ -0,0 +1,11 @@
+package test
+
+internal final class Test {
+    /*primary*/ public constructor Test()
+    internal final fun test(): jet.Int
+    
+    internal class object <class-object-for-Test> {
+        /*primary*/ private constructor <class-object-for-Test>()
+        internal final val a: jet.Int
+    }
+}