Move callable reference diagnostic tests to non-stdlib

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

@@ -0,0 +1,33 @@
+// !CHECK_TYPE
+// !DIAGNOSTICS: -UNUSED_EXPRESSION
+import kotlin.reflect.KFunction0
+
+class A {
+    class Nested
+    
+    fun main() {
+        val x = ::Nested
+        val y = A::Nested
+
+        checkSubtype<KFunction0<Nested>>(x)
+        checkSubtype<KFunction0<Nested>>(y)
+    }
+    
+    companion object {
+        fun main() {
+            ::Nested
+            val y = A::Nested
+
+            checkSubtype<KFunction0<A.Nested>>(y)
+        }
+    }
+}
+
+class B {
+    fun main() {
+        ::<!UNRESOLVED_REFERENCE!>Nested<!>
+        val y = A::Nested
+
+        checkSubtype<KFunction0<A.Nested>>(y)
+    }
+}