WC Vendors - Forcing all new registrations to be Vendors ( default ) if my-account registration is used

functions.php

/* By default Registrations to your site using the My Account = Vendor role, rather than the Customer role */
add_filter( 'woocommerce_new_customer_data', 'custom_woocommerce_new_customer_data' );
function custom_woocommerce_new_customer_data( $data ){
    $data['role'] = 'vendor'; // the new default role
    return $data;
}