fix(router): add new frontend routes for resources and knowledges to preserve route in the browser

- Introduced "/resources" and "/knowledges" routes to the frontendRoutes array in the router configuration, expanding the application's routing capabilities.

backend/pkg/server/router.go

@@ -53,6 +53,8 @@ var frontendRoutes = []string{
 	"/flows",
 	"/settings",
 	"/templates",
+	"/resources",
+	"/knowledges",
 	"/dashboard",
 }