Обернуть таблицу в div

modules/custom/fix/src/Plugin/Filter/TableDiv.php

<?php

namespace Drupal\fix\Plugin\Filter;

use Drupal\Component\Utility\Html;
use Drupal\Core\Form\FormStateInterface;
use Drupal\filter\FilterProcessResult;
use Drupal\filter\Plugin\FilterBase;

/**
 * @Filter(
 *   id = "filter_table_div",
 *   title = @Translation("Table in a container"),
 *   description = @Translation("Wrap a table in a div container."),
 *   type = Drupal\filter\Plugin\FilterInterface::TYPE_MARKUP_LANGUAGE,
 * )
 */
class TableDiv extends FilterBase
{

  public function process($text, $langcode)
  {
    $dom = Html::load($text);
    $elements = $dom->getElementsByTagName('table');
    if ($elements->length === 0) {
      return new FilterProcessResult(Html::serialize($dom));
    }

    /** @var \DOMElement $element */
    foreach ($elements as $element) {
      $new_element = clone $element;
      $wrapper = $dom->createElement('div');
      $wrapper->setAttribute('class', 'table-responsive');
      $wrapper->setAttribute('style', 'overflow-x:auto;');
      $wrapper->appendChild($new_element);
      $element->parentNode->replaceChild($wrapper, $element);
    }

    return new FilterProcessResult(Html::serialize($dom));
  }
}