Support version negotiation for any entity type (currently only Node & Media are supported)

https://www.drupal.org/project/drupal/issues/3031271#comment-13706800 ✨ Support version negotiation for any entity type (currently only Node & Media are supported) Fixed

@lois.chabrand , @PQ - thank you very much, with small changes that works good to drupal 9.5.2

update to https://www.drupal.org/project/drupal/issues/3031271#comment-14884943 ✨ Support version negotiation for any entity type (currently only Node & Media are supported) Fixed - it was working good, until we deleted some nodes which share the paragraph

afterthat we getting

Error: Call to a member function getEntityType() on null in Drupal\jsonapi\Access\EntityAccessChecker>checkRevisionViewAccess() (line 249 of web/core/modules/jsonapi/src/Access/EntityAccessChecker.php)

    switch ($entity_type->id()) {
      case 'node':
      case 'media':
        $access = $entity->access('view all revisions', $account, TRUE);
        break;
      // Project-specific modification... Allow access to revisions of paragraphs
      // if the current user has access to the parent entity and to this
      // version of this paragraph. Note, this is not a perfect implementation.
      // Ideally we should be checking for access to the specific version of the
      // parent entity but there appears to be no way to do that with
      // information available at this point until
      // https://www.drupal.org/project/paragraphs/issues/2954512 is committed.
      case 'paragraph':
        assert($entity instanceof ParagraphInterface);
        $parent = $entity->getParentEntity();
        // Parent became grand parent
        while ($parent->getEntityType()->id() === 'paragraph') {
          $parent = $parent->getParentEntity();  // <--------- line 249
        }

adding patch which overcomes https://www.drupal.org/project/drupal/issues/3031271#comment-15257741 ✨ Support version negotiation for any entity type (currently only Node & Media are supported) Fixed

It basically ignores parent part of access check if parent is null