The Elasticsearch query alert is definitely part of 7.12. You can find the documentation for it under "Alerting and Actions" -> "Alerts" -> "Elasticsearch query" (Elasticsearch query | Kibana Guide [7.12] | Elastic).
Apache, Apache Lucene, Apache Hadoop, Hadoop, HDFS and the yellow elephant
logo are trademarks of the
Apache Software Foundation
in the United States and/or other countries.