fix react query error (#9365)

src/screens/VideoFeed/index.tsx

···
   }, [params])
   const feedUri = params.type === 'feedgen' ? params.uri : undefined
   const {data: feedInfo} = useFeedInfo(feedUri)
-  const feedFeedback = useFeedFeedback(feedInfo, hasSession)
+  const feedFeedback = useFeedFeedback(feedInfo ?? undefined, hasSession)
   const {data, error, hasNextPage, isFetchingNextPage, fetchNextPage} =
     usePostFeedQuery(
       feedDesc,

src/state/queries/feed.ts

···
     queryKey: [feedInfoQueryKeyRoot, feedUri],
     queryFn: async () => {
       if (!feedUri) {
-        return undefined
+        return null
       }
 
       const res = await agent.app.bsky.feed.getFeedGenerator({