[site-reviews] add an "assigned_to_image" template tag

/**
 * Adds an "assigned_to_image" template tag
 * Paste this in your active theme's functions.php file.
 * @param \GeminiLabs\SiteReviews\Review $review
 * @param array $context
 * @return array
 */
add_filter('site-reviews/review/build/after', function($context, $review) {
    $context['assigned_to_image'] = '';
    $postId = glsr_get($review->assigned_posts, 0);
    if (!empty($postId)) {
        $context['assigned_to_image'] = get_the_post_thumbnail($postId, 'thumbnail');
    }
    return $context;
}, 10, 2);