admin/emoji/updateの必須項目を減らす 等 (#13449)

* admin/emoji/update enhancement

* add CustomEmojiService.getEmojiByName

* update endpoint

* fix

* Update update.ts

* Update autogen files

* type assertion

* Update CHANGELOG.md

packages/backend/src/core/CustomEmojiService.ts

@@ -393,6 +393,11 @@ export class CustomEmojiService implements OnApplicationShutdown {
 		return this.emojisRepository.findOneBy({ id });
 	}
 
+	@bindThis
+	public getEmojiByName(name: string): Promise<MiEmoji | null> {
+		return this.emojisRepository.findOneBy({ name, host: IsNull() });
+	}
+
 	@bindThis
 	public dispose(): void {
 		this.cache.dispose();