Fix response viewer stream scrolling

src-web/hooks/useRandomKey.ts

@@ -1,8 +1,8 @@
 import { useCallback, useState } from 'react';
 import { generateId } from '../lib/generateId';
 
-export function useRandomKey() {
-  const [value, setValue] = useState<string>(generateId());
+export function useRandomKey(initialValue?: string) {
+  const [value, setValue] = useState<string>(initialValue ?? generateId());
   const regenerate = useCallback(() => setValue(generateId()), []);
   return [value, regenerate] as const;
 }

src-web/hooks/useResponseBodyText.ts

@@ -10,6 +10,7 @@ export function useResponseBodyText({
   filter: string | null;
 }) {
   return useQuery({
+    placeholderData: (prev) => prev, // Keep previous data on refetch
     queryKey: [
       'response_body_text',
       response.id,