feat(analytics): update Google Analytics integration and improve fetch interception

- Refactored Google Analytics proxy routes in the Next.js configuration to enhance fallback handling.
- Improved fetch interception logic in the RootLayout component for more robust handling of Google Analytics requests, including support for `sendBeacon`.
- Updated the analytics script source to align with new API routes for better tracking accuracy.

next.config.ts

@@ -79,21 +79,12 @@ const nextConfig: NextConfig = {
         source: "/analytics/:match*",
         destination: "https://analytics.evandro.dev.br/:match*",
       },
-      // Google Tag Manager - Script principal
+      // Google Analytics - Fallback rewrites (as API routes são preferenciais)
+      // Estes rewrites servem como fallback caso as API routes falhem
       {
-        source: "/gtm/js/:id",
+        source: "/api/gtm/:id",
         destination: "https://www.googletagmanager.com/gtag/js?id=:id",
       },
-      // Google Analytics - Endpoints de coleta
-      {
-        source: "/ga/:match*",
-        destination: "https://www.google-analytics.com/:match*",
-      },
-      // Google Analytics - Endpoint alternativo (g/collect)
-      {
-        source: "/g/:match*",
-        destination: "https://www.google-analytics.com/g/:match*",
-      },
     ];
   },