Remove items from search result that are not connected to root because of hidden parents

RemoveNodesWithHiddenParentsFromSearchResults.php

<?php
namespace Vendor\Site\Aspects;

use Neos\ContentRepository\Domain\Model\NodeInterface;
use Neos\Flow\Annotations as Flow;
use Neos\Flow\Aop\JoinPointInterface;

/**
 * @Flow\Aspect
 */
class RemoveNodesWithHiddenParentsFromSearchResults
{
    /**
     * Remove nodes that have no connection to root
     *
     * @Flow\Around("method(Flowpack\ElasticSearch\ContentRepositoryAdaptor\Eel\ElasticSearchQueryBuilder->convertHitsToNodes())")
     *
     * @param JoinPointInterface $joinPoint
     * @return array
     */
    public function filterNodesThatAreNotConncetedToRoot(JoinPointInterface $joinPoint)
    {
        $result = $joinPoint->getAdviceChain()->proceed($joinPoint);

        return array_filter(
            $result,
            function(NodeInterface $node) {
                while ($node = $node->getParent()) {
                    if (!$node) {
                        return false;
                    } elseif ($node->getPath() == '/sites') {
                        return true;
                    }
                }
                return false;
            }
        );
    }
}