PHP8.3 compatibility issues

This is being worked on here: https://www.drupal.org/project/jsonapi_schema/issues/3431487 📌 Automated Drupal 11 compatibility fixes for jsonapi_schema Needs review

Thanks @volha_si!

Quoting myself from 📌 Automated Drupal 11 compatibility fixes for jsonapi_schema Needs review :

This error is actually a result of changes in the upstream Symfony class that we extend from. So I don't think it's specific to PHP 8.3.

We can probably close 🐛 PHP8.3 compatibility issues Active as a duplicate of this issue, and incorporate the MR changes into here. I'll start a new MR and cherry-pick them over.

I'm going to close this as a duplicate and see if I can incorporate your changes into 📌 Automated Drupal 11 compatibility fixes for jsonapi_schema Needs review .