fix(feed): only include pins for author threads filter

Previously, pins were included for both 'posts_with_replies' and
'posts_and_author_threads' filters. This change restricts pin inclusion
to only the 'posts_and_author_threads' filter, ensuring correct feed
behavior and reducing unnecessary data in other filter modes.

src/lib/api/feed/author.ts

@@ -1,10 +1,10 @@
 import {
   AppBskyFeedDefs,
-  AppBskyFeedGetAuthorFeed as GetAuthorFeed,
-  BskyAgent,
+  type AppBskyFeedGetAuthorFeed as GetAuthorFeed,
+  type BskyAgent,
 } from '@atproto/api'
 
-import {FeedAPI, FeedAPIResponse} from './types'
+import {type FeedAPI, type FeedAPIResponse} from './types'
 
 export class AuthorFeedAPI implements FeedAPI {
   agent: BskyAgent
@@ -23,9 +23,7 @@ export class AuthorFeedAPI implements FeedAPI {
 
   get params() {
     const params = {...this._params}
-    params.includePins =
-      params.filter === 'posts_with_replies' ||
-      params.filter === 'posts_and_author_threads'
+    params.includePins = params.filter === 'posts_and_author_threads'
     return params
   }