WooCommerce: Sort By Featured Products @ Shop

/**
 * @snippet       Move Featured Products To Top @ Woo Shop Page
 * @how-to        Get CustomizeWoo.com FREE
 * @author        Rodolfo Melogli
 * @compatible    WooCommerce 8
 * @community     https://businessbloomer.com/club/
 */

// Replace "default sorting" option with a custom one

add_filter( 'woocommerce_catalog_orderby', 'bbloomer_woocommerce_catalog_orderby_custom' );

function bbloomer_woocommerce_catalog_orderby_custom( $sortby ) {
    $sortby['featured'] = __( 'Default sorting', 'woocommerce' );
	unset( $sortby['menu_order'] );
    return $sortby;
}

// Make the custom one the default one

add_filter( 'woocommerce_default_catalog_orderby', 'bbloomer_woocommerce_catalog_orderby_custom_default' );

function bbloomer_woocommerce_catalog_orderby_custom_default() {
	return 'featured';
}

// Set sorting for new option

add_filter( 'woocommerce_get_catalog_ordering_args', 'bbloomer_woocommerce_catalog_orderby_custom_args' );

function bbloomer_woocommerce_catalog_orderby_custom_args( $args ) {
	$orderby_value = isset( $_GET['orderby'] ) ? wc_clean( $_GET['orderby'] ) : apply_filters( 'woocommerce_default_catalog_orderby', get_option( 'woocommerce_default_catalog_orderby' ) );
	if ( 'featured' == $orderby_value ) {
		$args['orderby'] = 'menu_order title';
		$args['order'] = '';
		$args['meta_key'] = '';
	}
	return $args;
}

// Adjust order to allow for featured posts

add_filter( 'posts_orderby', 'bbloomer_woocommerce_catalog_orderby_custom_featured_first', 10, 2 );

function bbloomer_woocommerce_catalog_orderby_custom_featured_first( $order_by, $query ) {
	global $wpdb;
	if ( ! is_admin() ) {
		$orderby_value = ( isset( $_GET['orderby'] ) ? wc_clean( (string) $_GET['orderby'] ) : apply_filters( 'woocommerce_default_catalog_orderby', get_option( 'woocommerce_default_catalog_orderby' ) ) );
		$orderby_value_array = explode( '-', $orderby_value );
		$orderby = esc_attr( $orderby_value_array[0] );
		$order = ( ! empty( $orderby_value_array[1] ) ? $orderby_value_array[1] : 'ASC' );
		$featured_product_ids = wc_get_featured_product_ids();
		if ( $orderby == "featured" && is_array( $featured_product_ids ) && ! empty( $featured_product_ids ) ) {
			if ( empty( $order_by ) ) {
				$order_by = "FIELD(" . $wpdb->posts . ".ID,'" . implode( "','", $featured_product_ids ) . "') DESC ";
			} else {
				$order_by = "FIELD(" . $wpdb->posts . ".ID,'" . implode( "','", $featured_product_ids ) . "') DESC, " . $order_by;
			}
		}  
	}
	return $order_by;
}