Enable preconfigured alerts with Recommended Monitors

Datadog's Terraform provider v4.0.0 introduces significant improvements including enhanced resource import capabilities and support for new Datadog products like Vulnerability Management and Cloud Workload Security. This release focuses on streamlining infrastructure-as-code workflows with Datadog, offering more robust management and wider coverage of Datadog services. Users are encouraged to review the upgrade guide due to breaking changes, but the benefits include improved stability and feature parity.