tests: Update box tests (1050294:id)

backend.native/tests/external/codegen/box/labels/infixCallLabelling.kt

@@ -0,0 +1,24 @@
+fun test(x: Int): Int {
+    x myMap {
+        return@myMap
+    }
+
+    return 0
+}
+
+fun myMap(x: Int): Int {
+    x myMap {
+        return@myMap
+    }
+
+    return 0
+}
+
+infix fun Int.myMap(x: () -> Unit) {}
+
+fun box(): String {
+    test(0)
+    myMap(0)
+
+    return "OK"
+}