wcfm-store-products-shortcode-on-single-product-page

add_shortcode('wcfm_store_products', function($attr) {
    global $post;
    $product_id = '';
    $store_id = '';
    if ( is_product() && $post && is_object($post) ) {
        $product_id = $post->ID;
        $store_id = $post->post_author;
    }
    if(! $store_id || ! $product_id ) return '';
    if ( isset( $attr['limit'] ) && !empty( $attr['limit'] ) ) {
        $limit = absint($attr['limit']);
        echo do_shortcode('[products store="'.$store_id.'" limit="'.$limit.'"]');
    } else {
        echo do_shortcode('[products store="'.$store_id.'"]');
    }
});

add_filter('woocommerce_shortcode_products_query', function ($query_args, $atts, $loop) {
    global $post;
    if ( is_product() && $post && is_object($post) ) {
        $product_id = $post->ID;
        $store_id = $post->post_author;
    }
    if(! $store_id || ! $product_id ) return '';
    $query_args['post__not_in'] = (array)$product_id;
    return $query_args;
}, 10, 3);