KT-11960: add test for case of instantiating inner class of a local class

compiler/testData/codegen/box/localClasses/ownClosureOfInnerLocalClass.kt

@@ -0,0 +1,27 @@
+// TARGET_BACKEND: JVM
+// Enable when KT-12566 gets fixed
+
+fun box(): String {
+    var log = ""
+
+    var s: Any? = null
+    for (t in arrayOf("1", "2", "3")) {
+        class C() {
+            val y = t
+
+            inner class D() {
+                fun foo() = "($y;$t)"
+            }
+        }
+
+        if (s == null) {
+            s = C()
+        }
+
+        log += (s as C).D().foo()
+    }
+
+    if (log != "(1;1)(1;1)(1;1)") return "fail: ${log}"
+
+    return "OK"
+}