Metax bulk patch returns 200 if at least one dataset is updated causing submitter miss the error

[genie9]

Describe the bug

Submitter uses bulk patch call to Metax before publishing submission to update metadata to the latest. If the study or some datasets fail to validate on Metax side but at least one passes Metax will still return HTTP200 and the response will have the form:
{"success": <successed datasets>, "failed": <failed datasets>}

To Reproduce

This behavior can be reproduced by

• not mapping some required value for Metax e.g. other_identifier[].type.identifier" which are mapped from alternateIdentifiers
• using demo server for Metax instead of mocked API
• there will be failing submission publishing but no visible error
  To see what's wrong with the dataset same mapped metadata should be sent as request body directly to Metax with PATCH https://metax.demo.fairdata.f/rest/v2/datasets.

Expected behavior

There should be an indication of which dataset failed to be updated to Metax. This can be achieved by e.g. replacing use of a bulk patch to separate object patching.