IndexTid.php

<?php

namespace Drupal\taxonomy\Plugin\views\argument;

use Drupal\taxonomy\Entity\Term;
use Drupal\views\Attribute\ViewsArgument;
use Drupal\views\Plugin\views\argument\ManyToOne;

/**
 * Allow taxonomy term ID(s) as argument.
 *
 * @ingroup views_argument_handlers
 */
class IndexTid extends ManyToOne {
    
    /**
     * {@inheritdoc}
     */
    public function titleQuery() {
        $titles = [];
        $terms = Term::loadMultiple($this->value);
        foreach ($terms as $term) {
            $titles[] = \Drupal::service('entity.repository')->getTranslationFromContext($term)
                ->label();
        }
        return $titles;
    }

}