Fix callable reference to constructor of nested class in object

#KT-15951 Fixed

compiler/testData/diagnostics/tests/callableReference/function/constructorOfNestedClassInObject.kt

@@ -0,0 +1,21 @@
+// KT-15951 Callable reference to class constructor from object is not resolved
+
+object A {
+    class Wrapper
+}
+
+class Outer {
+    companion object {
+        class Wrapper
+    }
+}
+
+fun test() {
+    A::Wrapper
+    (A)::<!UNRESOLVED_REFERENCE!>Wrapper<!>
+
+    Outer.Companion::Wrapper
+    (Outer.Companion)::<!UNRESOLVED_REFERENCE!>Wrapper<!>
+    <!UNUSED_EXPRESSION!>Outer::<!UNRESOLVED_REFERENCE!>Wrapper<!><!>
+    (Outer)::<!UNRESOLVED_REFERENCE!>Wrapper<!>
+}