feat: add 5000ms staleTime to useConnectedCalendars hook (calcom#23674)

- Add staleTime: 5000 to useQuery configuration in useConnectedCalendars
- Prevents unnecessary refetches for 5 seconds after data becomes stale
- Improves performance by reducing redundant API calls

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: morgan@cal.com <morgan@cal.com>

Author: devin-ai-integration[bot]

packages/platform/atoms/hooks/useConnectedCalendars.tsx

@@ -22,6 +22,7 @@ export const useConnectedCalendars = (props: { enabled?: boolean }) => {
       });
     },
     enabled: props?.enabled !== undefined ? props.enabled && isInit : isInit,
+    staleTime: 5000,
   });
 
   return calendars;