[APP-1031] Add new followerRule to threadgate settings (#7681)

* Add new followerRule to threadgate settings

* Handle WhoCanReply copy

* Handle follow case

* fix ci

* Revert "Handle follow case"

This reverts commit bc454dad89.

* Hide Follow button if followedBy rule enabled

* Revert "Revert "Handle follow case""

This reverts commit cadc46d2dc.

---------

Co-authored-by: Samuel Newman <mozzius@protonmail.com>

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

@@ -241,6 +241,11 @@ let PostThreadItemLoaded = ({
     return makeProfileLink(post.author, 'post', urip.rkey, 'quotes')
   }, [post.uri, post.author])
   const quotesTitle = _(msg`Quotes of this post`)
+  const onlyFollowersCanReply = !!threadgateRecord?.allow?.find(
+    rule => rule.$type === 'app.bsky.feed.threadgate#followerRule',
+  )
+  const showFollowButton =
+    currentAccount?.did !== post.author.did && !onlyFollowersCanReply
 
   const translatorUrl = getTranslatorLink(
     record?.text || '',
@@ -343,7 +348,7 @@ let PostThreadItemLoaded = ({
                 </Text>
               </Link>
             </View>
-            {currentAccount?.did !== post.author.did && (
+            {showFollowButton && (
               <View>
                 <PostThreadFollowBtn did={post.author.did} />
               </View>