dont send empty updates

src/homepage/service.ts

@@ -86,10 +86,12 @@ export class HomepageService extends BaseService<null> {
 			});
 		}
 
-		this.sseService.notifyClients({
-			type: "update",
-			data: updates,
-		});
+		if (updates.length > 0) {
+			this.sseService.notifyClients({
+				type: "update",
+				data: updates,
+			});
+		}
 
 		this.lastPoll = newPoll;
 		this.scheduleSongEndPoll(newPoll.tidal_current);