Add DDoS protection challenge metrics to Historical Stats and Real-Time Analytics APIs

apiadded

The Historical Stats API and the Real-Time Analytics API now support ten new metrics for troubleshooting DDoS protection challenges. These metrics cover challenge and token creation, validation outcomes, and Private Access Token (PAT) challenges issued during DDoS protection rule enforcement.

Prior change: Add AI Runtime Control requests metric to Historical Stats and Real-Time Analytics APIs

Following change: Adding Bots time series metrics API