fix replying to reply requires postCid in new API

src/components/reply-modal/reply-modal.tsx

@@ -31,7 +31,11 @@ interface ReplyModalProps {
 
 const ReplyModal = ({ closeModal, showReplyModal, parentCid, postCid, scrollY, subplebbitAddress }: ReplyModalProps) => {
   const { t } = useTranslation();
-  const { setPublishReplyOptions, publishReply, resetPublishReplyOptions, replyIndex } = usePublishReply({ cid: parentCid, subplebbitAddress });
+  const { setPublishReplyOptions, publishReply, resetPublishReplyOptions, replyIndex } = usePublishReply({
+    cid: parentCid,
+    subplebbitAddress,
+    postCid,
+  });
   const account = useAccount();
   const { displayName } = account?.author || {};
   const [url, setUrl] = useState('');

src/hooks/use-publish-reply.ts

@@ -3,7 +3,7 @@ import { Comment, useAccount, usePublishComment } from '@plebbit/plebbit-react-h
 import useAnonMode from './use-anon-mode';
 import usePublishReplyStore from '../stores/use-publish-reply-store';
 
-const usePublishReply = ({ cid, subplebbitAddress }: { cid: string; subplebbitAddress: string }) => {
+const usePublishReply = ({ cid, subplebbitAddress, postCid }: { cid: string; subplebbitAddress: string; postCid?: string }) => {
   const parentCid = cid;
   const account = useAccount();
   const { anonMode } = useAnonMode();
@@ -26,6 +26,7 @@ const usePublishReply = ({ cid, subplebbitAddress }: { cid: string; subplebbitAd
       const newOptions: Comment = {
         subplebbitAddress,
         parentCid,
+        postCid: postCid ?? parentCid,
         content: options.content === '' ? undefined : options.content ?? content,
         link: options.link === '' ? undefined : options.link ?? link,
         spoiler: options.spoiler ?? spoiler,