Smart completion: no "::xxx" items for members and fixed bug with constructors not appearing there

idea/idea-completion/testData/smart/callableReference/NoQualifier12.kt

@@ -1,5 +1,6 @@
 class C {
-    fun foo(p: C.() -> Unit){}
+    fun foo(p: C.() -> Any){}
+    fun foo(p: () -> Any){}
 
     fun bar() {
         foo(<caret>)
@@ -7,7 +8,15 @@ class C {
 
     fun f1(){}
     fun C.f2(){}
+
+    inner class Inner
+    class Nested
 }
 
-// EXIST: ::f1
+class Outer
+
+// ABSENT: ::f1
 // ABSENT: ::f2
+// ABSENT: ::Inner
+// EXIST: ::Nested
+// EXIST: ::Outer