Builder: Change default widget title HTML wrapper. How to replace H4 tags around widget titles

builder_modify_widget_title_wrappers.php

<?php
// Modify default widget wrappers
add_filter( 'builder_filter_register_sidebar_options', 'intw_modify_widget_wrappers' );
function intw_modify_widget_wrappers( $options ) { 
    $options['before_title'] = '<div class="widget-title">';
    $options['after_title'] = '</div>';
    return $options;
}
?>