Usage of as_count() along with avg() aggregation method should not be permitted in monitor

[julienfoenet]

What resources or data sources are affected?

• resource_datadog_monitor

Feature Request

When validating the formula inside the "query" parameter, it should be forbidden to use the as_count() modifier along with the aggregation method avg(). Only sum() should be allowed with as_count(), like it is today in the UI of the monitor.
It is explained at the end of the doc: https://docs.datadoghq.com/monitors/guide/as-count-in-monitor-evaluations/

References

No response