CUW: Remove item meta on emails

Checkout Upsell: Remove offer and discount item meta display on emails

add_filter('woocommerce_order_item_get_formatted_meta_data', function($meta_data, $item) {
    if (did_action('woocommerce_email_header')) {
        if (did_action('woocommerce_email_header') != did_action('woocommerce_email_footer')) {
            foreach ($meta_data as $key => $data) {
                if (isset($data->key) && in_array($data->key, ['cuw_offer_text', 'cuw_discount_text'])) {
                    unset($meta_data[$key]);
                }
            }
        }
    }
    return $meta_data;
}, 1000, 2);