filter Bricks term query for custom taxonomy tag

function.php

<?php

// Include only terms where posts do have a term from custom 'hersteller' taxonomy
add_filter(
    "bricks/terms/query_vars",
    function ($query_vars, $settings, $element_id) {
        if ($element_id !== "qaajzi") {
            return $query_vars;
        }

        $hersteller_ids = [];
        $term_id = get_queried_object_id();

        $args = [
            "post_type" => "produkt",
            "post_status" => "publish",
            "tax_query" => [
                [
                    "taxonomy" => "category",
                    "field" => "term_id",
                    "terms" => $term_id,
                ]
            ]
        ];
        $my_query = new WP_Query($args);
        
        
        if ( $my_query->get_posts() ) {
            foreach($my_query->get_posts() as $post) {
                $hersteller = array_shift(wp_get_post_terms($post->ID, 'hersteller'));
                  
                if($hersteller->term_id) {
                    $hersteller_ids[$hersteller->term_id] = $hersteller->name;
                }
            }
        }
        wp_reset_postdata();

        $query_vars["include"] = array_keys($hersteller_ids);

        return $query_vars;
    },
    10,
    3
);