fix birdseye reordering widget in settings

cameras are only sorted while the layout is built, so a config change that reorders them needs a fresh layout even when the active set is unchanged, which is always the case in continuous mode

web/src/components/config-form/sectionExtras/BirdseyeCameraReorder.tsx

@@ -91,6 +91,7 @@ export default function BirdseyeCameraReorder({
     try {
       await axios.put("config/set", {
         requires_restart: 0,
+        update_topic: "config/cameras/*/birdseye",
         config_data: { cameras: cameraUpdates },
       });
       await updateConfig();