RBAC for ingestion metrics

Administrators can now use RBAC for ingestion metrics to restrict visibility of system health data, such as ingestion volume, errors, and throughput, based on a user's business scope.

The Data Ingestion and Health dashboard now uses Data Access scopes. When a scoped user loads the dashboard, the system automatically filters metrics to show only data that matches their assigned labels: Namespace, Log Type, and Ingestion Source.