Remove getProfile calls when loading feed (#3881)

* remove unnecessary `getProfile()` calls from feed load

add comments

ensure only if first

simplify

nit

handle cases where the parent is removed

add a comment

remove unnecessary `getProfile()` calls from feed load

limit only to the first post in the returned items

move the logic out of the render and into the query

add the grandparent properly

update `FeedItem`

bump package

update `FeedItem`

update `post-feed` query

update `FeedSlice`

* nit

* simplify logic

* always pass `parentAuthor`

* oops!

* update `DebugMod`

src/view/screens/DebugMod.tsx

@@ -803,6 +803,8 @@ function MockPostFeedItem({
       post={post}
       record={post.record as AppBskyFeedPost.Record}
       moderation={moderation}
+      parentAuthor={undefined}
+      showReplyTo={false}
       reason={undefined}
       feedContext={''}
     />