Custom reaction (#4517)

* Custom reaction

* increase limit of reactions/delete

* リアクションの場合は OS標準の絵文字を使用 を迂回する

* カスタムリアクションを無効にする設定

* fix

* disableCustomReaction --> enableEmojiReaction

* Avoid MFM rendering

* 🎨

* 🎨

* Auto accept

* custom emoji reaction

* Improve usability

* Extract emojiRegex

* Fix

* Clean up

* 🎨

* 🎨

* toDbReaction で reaction は必須に

あとフォールバックは like に

* Clean up

* Make required

* 3eb08748fe (r266241728)

* Refactor

* Allow null

src/remote/activitypub/kernel/like.ts

@@ -3,7 +3,6 @@ import Note from '../../../models/note';
 import { IRemoteUser } from '../../../models/user';
 import { ILike } from '../type';
 import create from '../../../services/note/reaction/create';
-import { validateReaction } from '../../../models/note-reaction';
 
 export default async (actor: IRemoteUser, activity: ILike) => {
 	const id = typeof activity.object == 'string' ? activity.object : activity.object.id;
@@ -18,12 +17,5 @@ export default async (actor: IRemoteUser, activity: ILike) => {
 		throw new Error();
 	}
 
-	let reaction = 'like';
-
-	// 他のMisskeyインスタンスからのリアクション
-	if (activity._misskey_reaction && validateReaction.ok(activity._misskey_reaction)) {
-		reaction = activity._misskey_reaction;
-	}
-
-	await create(actor, note, reaction);
+	await create(actor, note, activity._misskey_reaction);
 };