Show all user_role to the change author dropdown option

/** Show all user_role to the change author dropdown option **/
//https://wordpress.org/support/topic/author-dropdown-fails-to-show-users-with-custom-role-that-includes-author-editor/
//https://developer.wordpress.org/reference/hooks/wp_dropdown_users_args/

add_action('wp_dropdown_users_args', 'filter_authors');
function filter_authors( $args ) {
    if ( isset( $args['who'])) {
        $args['role__in'] = ['subscriber', 'author', 'editor', 'administrator', 'manager']; //add desires user role
        unset( $args['who']);
    }
    return $args;
}