LinkItemNormalizer breaks importing menu links via default content

Hi,

I'm seeing the same thing exporting a node with a link field using default_content and replication. I think I understand what's going on. From \Drupal\hal\Normalizer\FieldItemNormalizer::normalize():

    // The values are wrapped in an array, and then wrapped in another array
    // keyed by field name so that field items can be merged by the
    // FieldNormalizer. This is necessary for the EntityReferenceItemNormalizer
    // to be able to place values in the '_links' array.
    $field = $field_item->getParent();
    return [
      $field->getName() => [$this->normalizedFieldValues($field_item, $format, $context)],
    ];

Normally default_content relies on Drupal\hal\Normalizer\FieldItemNormalizer with a priority of 10 to handle links, but when replication's enabled, its \Drupal\replication\Normalizer\LinkItemNormalizer takes over with a priority of 40 and it doesn't return things in that particular format Hal is expecting. I'm brand new to replication, so could be missing something (: but is the solution just to prevent normalization of hal_json? (See attached patch.)

Thanks!

As Hal module does some special handling for that field type I think the fix makes sense.

Thanks @AndyF!