text: Title: [Alerting] Update internal API calls use new Alerting APIs
  Body: There are still places in the code that call the legacy alerting APIs. Now that we are using telemetry to track usages of the legacy APIs, we should update to use the new ones so that the telemetry numbers are not thrown off.
  
  https://github.com/elastic/kibana/blob/46bfe577c5823d759820141e0665e27bc1a12792/x-pack/examples/alerting_example/public/components/view_alert.tsx#L39-L46
  
  https://github.com/elastic/kibana/blob/46bfe577c5823d759820141e0665e27bc1a12792/x-pack/examples/alerting_example/public/components/view_astros_alert.tsx#L45-L52
  
  https://github.com/elastic/kibana/blob/46bfe577c5823d759820141e0665e27bc1a12792/x-pack/plugins/alerting/public/alert_api.ts#L16-L37
  