Fix flash loading response viewer

src-web/hooks/useResponseBodyText.ts

@@ -5,7 +5,6 @@ import { getResponseBodyText } from '../lib/responseBody';
 export function useResponseBodyText(response: HttpResponse) {
   return useQuery<string | null>({
     queryKey: ['response-body-text', response?.updatedAt],
-    initialData: null,
     queryFn: () => getResponseBodyText(response),
-  }).data;
+  });
 }