Replace getAgent() with reading agent (#4243)

* Replace getAgent() with agent

* Replace {agent} with agent

src/lib/api/feed/following.ts

@@ -3,14 +3,14 @@ import {AppBskyFeedDefs, BskyAgent} from '@atproto/api'
 import {FeedAPI, FeedAPIResponse} from './types'
 
 export class FollowingFeedAPI implements FeedAPI {
-  getAgent: () => BskyAgent
+  agent: BskyAgent
 
-  constructor({getAgent}: {getAgent: () => BskyAgent}) {
-    this.getAgent = getAgent
+  constructor({agent}: {agent: BskyAgent}) {
+    this.agent = agent
   }
 
   async peekLatest(): Promise<AppBskyFeedDefs.FeedViewPost> {
-    const res = await this.getAgent().getTimeline({
+    const res = await this.agent.getTimeline({
       limit: 1,
     })
     return res.data.feed[0]
@@ -23,7 +23,7 @@ export class FollowingFeedAPI implements FeedAPI {
     cursor: string | undefined
     limit: number
   }): Promise<FeedAPIResponse> {
-    const res = await this.getAgent().getTimeline({
+    const res = await this.agent.getTimeline({
       cursor,
       limit,
     })