WooCommerce - allow html in product attribute

<?php

// custom product-attributes.php for a child theme

/**
 * Product attributes
 *
 * Used by list_attributes() in the products class.
 *
 * This template can be overridden by copying it to yourtheme/woocommerce/single-product/product-attributes.php.
 *
 * HOWEVER, on occasion WooCommerce will need to update template files and you
 * (the theme developer) will need to copy the new files to your theme to
 * maintain compatibility. We try to do this as little as possible, but it does
 * happen. When this occurs the version of the template file will be bumped and
 * the readme will list any important changes.
 *
 * @see https://docs.woocommerce.com/document/template-structure/
 * @package WooCommerce\Templates
 * @version 3.6.0
 */

// customized to allow html in attribute values
// custom attributes only
// does not work with global attributtes
// ensure the source of the html attributes is trusted

defined( 'ABSPATH' ) || exit;

if ( ! $product_attributes ) {
    return;
}
?>
<table class="woocommerce-product-attributes shop_attributes">
    <?php foreach ( $product_attributes as $product_attribute_key => $product_attribute ) : ?>
        <tr class="woocommerce-product-attributes-item woocommerce-product-attributes-item--<?php echo esc_attr( $product_attribute_key ); ?>">
            <th class="woocommerce-product-attributes-item__label topcode"><?php echo wp_kses_post( $product_attribute['label'] ); ?></th>

<?php
$product_id = $product->get_id();
$ats = get_post_meta( $product_id, '_product_attributes', true );
foreach( $ats as $at ) {
  if( $product_attribute['label'] == $at['name'] ) {
    $product_attribute['value'] = html_entity_decode( $at['value'], ENT_COMPAT | ENT_HTML5 );
  }
}
?>
            <td class="woocommerce-product-attributes-item__value"><?php echo wp_kses_post( $product_attribute['value'] ); ?></td>
        </tr>
    <?php endforeach; ?>
</table>