Prohibit local objects and enum classes

#KT-5402 Fixed
  #KT-4838 Fixed

Resolve type of object inside local object as special, not supertype('Any').
Changed visibility of constructor of anonymous object to 'internal' to be able to resolve the following:
fun box(): String {
    var foo = object {
        val bar = object {
            val baz = "ok"
        }
    }
    return foo.bar.baz
}
The containing declaration of property initializers is constructor, so 'baz' was invisible inside private constructor.

js/js.translator/testData/object/cases/objectInMethod.kt

@@ -2,13 +2,10 @@ package foo
 
 class A() {
     fun f(): Boolean {
-        object t {
-            val c = true;
-        }
         val z = object {
             val c = true
         }
-        return t.c && z.c
+        return z.c
     }
 }