fix(backend): incorrect logic for determining whether Quote or not (#13700)

* fix(backend): incorrect logic for determining whether Quote or not

* Update CHANGELOG.md

---------

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

packages/backend/src/misc/is-renote.ts

@@ -0,0 +1,36 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import type { MiNote } from '@/models/Note.js';
+
+type Renote =
+	MiNote & {
+		renoteId: NonNullable<MiNote['renoteId']>
+	};
+
+type Quote =
+	Renote & ({
+		text: NonNullable<MiNote['text']>
+	} | {
+		cw: NonNullable<MiNote['cw']>
+	} | {
+		replyId: NonNullable<MiNote['replyId']>
+		reply: NonNullable<MiNote['reply']>
+	} | {
+		hasPoll: true
+	});
+
+export function isRenote(note: MiNote): note is Renote {
+	return note.renoteId != null;
+}
+
+export function isQuote(note: Renote): note is Quote {
+	// NOTE: SYNC WITH NoteCreateService.isQuote
+	return note.text != null ||
+		note.cw != null ||
+		note.replyId != null ||
+		note.hasPoll ||
+		note.fileIds.length > 0;
+}