perf(frontend): Debounce scrollbar detection in DialogWrap

### Changes 🏗️

Chat should be disabled by default; otherwise, it flashes, and if Launch
Darkly fails to fail, it is dangerous.

### Checklist 📋

#### For code changes:
- [x] I have clearly listed my changes in the PR description
- [x] I have made a test plan
- [x] I have tested my changes according to the test plan:
  - [x] Run locally with Launch Darkly disabled and test the above

autogpt_platform/frontend/src/components/molecules/Dialog/components/DialogWrap.tsx

@@ -3,6 +3,7 @@ import { scrollbarStyles } from "@/components/styles/scrollbars";
 import { cn } from "@/lib/utils";
 import { X } from "@phosphor-icons/react";
 import * as RXDialog from "@radix-ui/react-dialog";
+import { debounce } from "lodash";
 import {
   CSSProperties,
   PropsWithChildren,
@@ -70,13 +71,21 @@ export function DialogWrap({
       if (!el) return;
       setHasVerticalScrollbar(el.scrollHeight > el.clientHeight + 1);
     }
+    
+    // Debounce the update function to prevent rapid successive state updates
+    const debouncedUpdate = debounce(update, 100);
+    
+    // Initial update without debounce for immediate UI feedback
     update();
-    const ro = new ResizeObserver(update);
+    
+    const ro = new ResizeObserver(debouncedUpdate);
     if (scrollRef.current) ro.observe(scrollRef.current);
-    window.addEventListener("resize", update);
+    window.addEventListener("resize", debouncedUpdate);
+    
     return () => {
+      debouncedUpdate.cancel();
       ro.disconnect();
-      window.removeEventListener("resize", update);
+      window.removeEventListener("resize", debouncedUpdate);
     };
   }, []);
 

autogpt_platform/frontend/src/services/feature-flags/use-get-flag.ts

@@ -48,7 +48,7 @@ const mockFlags = {
   [Flag.AGENT_FAVORITING]: false,
   [Flag.MARKETPLACE_SEARCH_TERMS]: DEFAULT_SEARCH_TERMS,
   [Flag.ENABLE_PLATFORM_PAYMENT]: false,
-  [Flag.CHAT]: true,
+  [Flag.CHAT]: false,
 };
 
 export function useGetFlag<T extends Flag>(flag: T): FlagValues[T] | null {