Remove WhoCanReply from thread children

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

@@ -685,6 +685,7 @@ function ExpandedPostDetails({
   const pal = usePalette('default')
   const {_} = useLingui()
   const openLink = useOpenLink()
+  const isRootPost = !('reply' in post.record)
 
   const onTranslatePress = React.useCallback(() => {
     openLink(translatorUrl)
@@ -701,17 +702,19 @@ function ExpandedPostDetails({
         s.mb10,
       ]}>
       <Text style={[a.text_sm, pal.textLight]}>{niceDate(post.indexedAt)}</Text>
-      <WhoCanReply
-        post={post}
-        postgate={
-          // TODO maybe define at query
-          postgate ||
-          createPostgateRecord({
-            post: post.uri,
-          })
-        }
-        isThreadAuthor={isThreadAuthor}
-      />
+      {isRootPost && (
+        <WhoCanReply
+          post={post}
+          postgate={
+            // TODO maybe define at query
+            postgate ||
+            createPostgateRecord({
+              post: post.uri,
+            })
+          }
+          isThreadAuthor={isThreadAuthor}
+        />
+      )}
       {needsTranslation && (
         <>
           <Text style={[a.text_sm, pal.textLight]}>&middot;</Text>