feat: use OP's language as recommendation when replying (#8832)

* feat: use OP's language as recommendation when replying

* fix: address nits

src/view/com/post-thread/PostThread.tsx

@@ -420,6 +420,7 @@ export function PostThread({uri}: {uri: string}) {
         author: thread.post.author,
         embed: thread.post.embed,
         moderation: threadModerationCache.get(thread),
+        langs: thread.record.langs,
       },
       onPost: onPostReply,
     })

src/view/com/post-thread/PostThreadItem.tsx

@@ -299,6 +299,7 @@ let PostThreadItemLoaded = ({
         author: post.author,
         embed: post.embed,
         moderation,
+        langs: record.langs,
       },
       onPost: onPostReply,
       onPostSuccess: onPostSuccess,