[site-reviews] Include the Accepted Terms with the creation date as the value on privacy export

/**
 * Add the Accepted Terms data to the review
 *
 * @param array $data
 * @param \GeminiLabs\SiteReviews\Review $review
 * @return array
 */
add_filter('site-reviews/personal-data/export', function ($data, $review) {
    $name = 'Terms Accepted';
    if (false !== array_search($name, wp_list_pluck($data, 'name'))) {
        // The Accepted Terms date has already been added to the export
        return $data;
    }
    // If the terms were accepted when the review was submitted, use the review creation date as the value
    $value = $review->terms ? $review->date_gmt : false;
    // Set the Accepted Terms date to the export data
    $data[] = ['name' => $name, 'value' => $value];
    return $data;
}, 10, 2);