Example of how to include EE template_tags.php file in the requests used by page builders.

example.php

<?php //Please do not include the opening PHP tag if you already have one

function tw_ee_require_template_tags() {
    //Pull the current action from the request.
    $action = EE_Registry::instance()->REQ->get('action', '');

    //Build an array of page builder actions to load the template_tags.php file on.
    $page_builder_actions = array(
        'elementor',
        'elementor_ajax'
    );

    //Check if the current action matches any of the page builder actions above
    if( in_array($action, $page_builder_actions) ) {
        
        //If espresso_event_date_range is not defined, include the template_tags.php file
        if( ! function_exists('espresso_event_date_range') ) {
            require_once EE_PUBLIC . 'template_tags.php';
        }
    }
}
add_action('AHEE__EE_System__set_hooks_for_shortcodes_modules_and_addons', 'tw_ee_require_template_tags');