user_topics_ui: Fix backwards setTimeout arguments.

Introduced by commit 401c8bbb21
(#27254).

Signed-off-by: Anders Kaseorg <anders@zulip.com>

web/src/user_topics_ui.js

@@ -46,14 +46,14 @@ export function handle_topic_updates(user_topic_event) {
         }
     }
 
-    setTimeout(0, () => {
+    setTimeout(() => {
         // Defer updates for any background-rendered messages lists until the visible one has been updated.
         for (const list of message_lists.all_rendered_message_lists()) {
             if (list.preserve_rendered_state && message_lists.current !== list) {
                 list.update_muting_and_rerender();
             }
         }
-    });
+    }, 0);
 }
 
 export function toggle_topic_visibility_policy(message) {