fix: move outerHtml function to the HtmlPageCrawler object (#1836)

Update the CDS Redirector theme `render_block` filter to
have the function call on the object rather than the string.

wordpress/wp-content/themes/cds-redirector/filter-core-buttons.php

@@ -20,10 +20,10 @@ function cds_filter_core_buttons($block_content, $block)
                 $crawler = @new HtmlPage($html);
                 $link = $crawler->filter('a');
                 $link->addClass($className);
-                $links .= $link;
+                $links .= $link->outerHtml();
             }
 
-            return $links->outerHtml();
+            return $links;
         } catch (Exception $e) {
             //no-op
         }