tests: Update box tests (1050294:id)

backend.native/tests/external/codegen/box/localFunctions/parameterAsDefaultValue.kt

@@ -0,0 +1,11 @@
+fun foo(): String {
+    fun bar(x: String, y: String = x): String {
+        return y
+    }
+
+    return bar("OK")
+}
+
+fun box(): String {
+    return foo()
+}