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

backend.native/tests/external/codegen/box/innerNested/kt5363.kt

@@ -0,0 +1,13 @@
+class Outer {
+    class Nested{
+        fun foo(s: String) = s.extension()
+    }
+
+    companion object {
+        private fun String.extension(): String = this
+    }
+}
+
+fun box(): String {
+    return Outer.Nested().foo("OK")
+}