PostThread cleanup (#3183)

* cleanup PostThread

rm some more unnecessary code

cleanup some more pieces

fix `isLoading` logic

few fixes

organize

refactor `PostThread`

allow chaining of `postThreadQuery`

Update `Hashtag` screen with the component changes

Make some changes to the List components

adjust height and padding of bottom loader to account for bottom bar

* rm unnecessary chaining logic

* maxReplies logic

* adjust error logic

* use `<` instead of `<=`

* add back warning comment

* remove unused prop

* adjust order

* update prop name

* don't show error if `isLoading`

src/screens/Hashtag.tsx

@@ -128,8 +128,8 @@ export default function HashtagScreen({
         isError={isError}
         isEmpty={posts.length < 1}
         onRetry={refetch}
-        notFoundType="results"
-        empty={_(msg`We couldn't find any results for that hashtag.`)}
+        emptyTitle="results"
+        emptyMessage={_(msg`We couldn't find any results for that hashtag.`)}
       />
       {!isLoading && posts.length > 0 && (
         <List<PostView>