Issue #3282696: Port of l10n_community: translation form (properly unapprove suggestion strings)

    $time = \Drupal::time()->getRequestTime();

    // Make the existing approved string a suggestion (if applicable).

    // There should only ever be one string like this.

    // There should only ever be one string like this, but you know, errors

    // happen.

    $translations = $translation_storage->loadByProperties([

      'sid' => $sid,

      'language' => $langcode,

      'suggestion' => 0,

      'status' => 1,

    ]);

    /** @var \Drupal\l10n_server\Entity\L10nServerTranslationInterface $translation */

    if ($translation = reset($translations)) {

    foreach ($translations as $translation) {

      $translation

        ->set('suggestion', 1)

        ->set('changed', $time);