perf: optimize server-side analytics and notifications to resolve 32s transaction delay

- Added 5s timeout to GotifyNotificationService
- Reduced timeout to 2s in UmamiAnalyticsService
- Implemented non-blocking analytics tracking in layout using Next.js after() API

lib/services/analytics/umami-analytics-service.ts

@@ -91,7 +91,7 @@ export class UmamiAnalyticsService implements AnalyticsService {
 
       // Add a timeout to prevent hanging requests
       const controller = new AbortController();
-      const timeoutId = setTimeout(() => controller.abort(), 10000); // 10s timeout
+      const timeoutId = setTimeout(() => controller.abort(), 2000); // 2s timeout
 
       const headers: Record<string, string> = {
         'Content-Type': 'application/json',