Url encode record id in hierarchy tree links. (#1266)

module/VuFind/src/VuFind/Hierarchy/TreeRenderer/JSTree.php

@@ -251,7 +251,7 @@ class JSTree extends AbstractBase
             ];
             $cache[$route] = $this->router->fromRoute($route, $params, $options);
         }
-        return str_replace('__record_id__', $id, $cache[$route]);
+        return str_replace('__record_id__', urlencode($id), $cache[$route]);
     }
 
     /**