GetDKAN#4306: properties of schema array/items do not respect propert…

…y specs regarding element type - fix tests

modules/json_form_widget/tests/src/Unit/JsonFormBuilderTest.php

@@ -375,7 +375,7 @@ private function getRouter() {
     $email_validator = new EmailValidator();
     $string_helper = new StringHelper($email_validator);
     $object_helper = new ObjectHelper();
-    $array_helper = new ArrayHelper($object_helper);
+    $array_helper = new ArrayHelper($object_helper, $string_helper);
     $integer_helper = new IntegerHelper();
 
     $options = (new Options())