clean up copy constructor

packages/backend/src/models/LatestNote.ts

@@ -36,10 +36,8 @@ export class LatestNote {
 	public note: MiNote | null;
 
 	constructor(data: Partial<LatestNote>) {
-		if (data == null) return;
-
 		for (const [k, v] of Object.entries(data)) {
-			(this as any)[k] = v;
+			(this as Record<string, unknown>)[k] = v;
 		}
 	}
 }