LTLに特定条件下でチャンネル投稿が混ざり込む現象の修正 (#12347)

* LTLにチャンネル投稿を含まないように修正

* fix CHANGELOG.md

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Co-authored-by: osamu <46447427+sam-osamu@users.noreply.github.com>

packages/backend/src/server/api/stream/channels/local-timeline.ts

@@ -52,7 +52,7 @@ class LocalTimelineChannel extends Channel {
 
 		if (note.user.host !== null) return;
 		if (note.visibility !== 'public') return;
-		if (note.channelId != null && !this.followingChannels.has(note.channelId)) return;
+		if (note.channelId != null) return;
 
 		// 関係ない返信は除外
 		if (note.reply && this.user && !this.following[note.userId]?.withReplies && !this.withReplies) {