Apply a custom hasAffectingChanges to avoid "Non-translatable fields can only be changed when updating the original language." message when changing block properties

Example on how we could apply this:

on the .module file:

/**
 * Implements hook_field_info_alter().)
 */
function my_module_field_info_alter(&$info) {
  if (isset($info['block_field'])) {
    // Override the list class for the block_field field type to avoid comparing
    // plugin changes between revisions.
    // @see \Drupal\Core\Field\FieldItemList::hasAffectingChanges()
    // @see https://www.drupal.org/project/block_field/issues/3517759
    $info['block_field']['list_class'] = '\Drupal\my_module\BlockFieldItemList';
  }
}

The custom BlockFieldItemList class:

<?php

namespace Drupal\my_module;

use Drupal\Core\Field\FieldItemList;
use Drupal\Core\Field\FieldItemListInterface;

/**
 * Avoids block plugin fields to be compared between revisions.
 */
class BlockFieldItemList extends FieldItemList {

  /**
   * {@inheritdoc}
   */
  public function hasAffectingChanges(FieldItemListInterface $original_items, $langcode) {
    // If there are different items, then it is a change.
    if (count($this) != count($original_items)) {
      return TRUE;
    }

    foreach ($this as $delta => $item) {
      if ($item->getProperties()['plugin_id']->getValue() != $original_items[$delta]->getProperties()['plugin_id']->getValue()) {
        return TRUE;
      }
    }

    return FALSE;
  }

}