Test visibility of anonymous classes for callable references

compiler/testData/writeFlags/callableReference/visibility/functionReference.kt

@@ -0,0 +1,9 @@
+class A {
+    fun foo() {}
+
+    val bar = A::foo
+}
+
+// TESTED_OBJECT_KIND: class
+// TESTED_OBJECTS: A$bar$1
+// FLAGS: ACC_FINAL, ACC_SUPER