tests: Update external tests (1.1.2-dev-393)

backend.native/tests/external/codegen/box/classes/selfcreate.kt

@@ -0,0 +1,14 @@
+class B () {}
+
+open class A(val b : B) {
+    fun a(): A = object: A(b) {}
+}
+
+fun box() : String {
+    val b = B()
+    val a = A(b).a()
+
+    if (a.b !== b) return "failed"
+
+    return "OK"
+}