update latest note in background (don't await the result)

packages/backend/src/core/NoteDeleteService.ts

@@ -152,7 +152,7 @@ export class NoteDeleteService {
 			userId: user.id,
 		});
 
-		await this.updateLatestNote(note);
+		this.updateLatestNoteBG(note);
 
 		if (deleter && (note.userId !== deleter.id)) {
 			const user = await this.usersRepository.findOneByOrFail({ id: note.userId });
@@ -236,6 +236,12 @@ export class NoteDeleteService {
 		}
 	}
 
+	private updateLatestNoteBG(note: MiNote): void {
+		this
+			.updateLatestNote(note)
+			.catch(err => console.error('Unhandled exception while updating latest_note (after delete):', err));
+	}
+
 	private async updateLatestNote(note: MiNote) {
 		// If it's a DM, then it can't possibly be the latest note so we can safely skip this.
 		if (note.visibility === 'specified') return;