Get relevant langage ids for menus, e.g. hreflang or language switch

HrefLangNews.php

<?php

namespace GeorgRinger\News\Hooks;

use TYPO3\CMS\Core\Database\ConnectionPool;
use TYPO3\CMS\Core\Utility\GeneralUtility;

/**
 * Get language ids for news language menu
 *
 * Having a language menu with
 *   [globalVar = GP:tx_news_pi1|news > 0]
 *      page.headerData.25.special.value.cObject = USER
 *      page.headerData.25.special.value.cObject.userFunc = GeorgRinger\Bda\Hooks\HrefLangNews->run
 *   [global]
 * 
 * The userfunc will return the relevant ids
 *
 */
class HrefLangNews
{

    public function run(): string
    {
        $newsUid = $this->getNewsUid();

        if ($newsUid === 0) {
            return '';
        }
        return $this->getLanguageIdsFromNews($newsUid);
    }

    /**
     * @param int $newsUid
     * @return string
     */
    protected function getLanguageIdsFromNews(int $newsUid): string
    {
        $list = [];
        $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)->getQueryBuilderForTable('tx_news_domain_model_news');

        $rows = $queryBuilder
            ->select('*')
            ->from('tx_news_domain_model_news')
            ->where(
                $queryBuilder->expr()->orX(
                    $queryBuilder->expr()->eq('uid', $queryBuilder->createNamedParameter($newsUid, \PDO::PARAM_INT)),
                    $queryBuilder->expr()->eq('l10n_parent', $queryBuilder->createNamedParameter($newsUid, \PDO::PARAM_INT))
                )
            )
            ->execute()
            ->fetchAll();

        foreach ($rows as $row) {
            $list[] = $row['sys_language_uid'];
        }

        return implode(',', $list);
    }

    protected function getNewsUid(): int
    {
        $vars = GeneralUtility::_GET('tx_news_pi1');
        if ($vars['news']) {
            return (int)$vars['news'];
        }
        return 0;
    }
}

menu.typoscript

page.headerData.25 = HMENU
page.headerData.25 {
    special = language
    special.value = 0,1,2
    1 = TMENU
    1 {
        NO = 1
        NO.stdWrap.cObject = TEXT
        NO.stdWrap.cObject.value = en || de || fr
        NO.linkWrap = <link rel="alternate" hreflang="|
        NO.doNotLinkIt = 1
        NO.after.cObject = TEXT
        NO.after.cObject {
            stdWrap.wrap = " href="|" />
            stdWrap.typolink.parameter.data = page:uid
            stdWrap.typolink.additionalParams = &L=0 || &L=1 || &L=2
            stdWrap.typolink.addQueryString = 1
            stdWrap.typolink.addQueryString.exclude = L,id,cHash,no_cache
            stdWrap.typolink.addQueryString.method = GET
            stdWrap.typolink.returnLast = url
            stdWrap.typolink.forceAbsoluteUrl = 1
        }

        ACT < .NO
        CUR < .NO
    }
}

[globalVar = GP:tx_news_pi1|news > 0]
    page.headerData.25.special.value.cObject = USER
    page.headerData.25.special.value.cObject.userFunc = GeorgRinger\News\Hooks\HrefLangNews->run
[global]

hi Georg,

the optionsplits:

NO.stdWrap.cObject.value = en || de || fr
stdWrap.typolink.additionalParams = &L=0 || &L=1 || &L=2

remain unchanged by this userfunc, this mashes up the rendered menu. What would the best solution for this?