Move ES|QL change_point to tech preview

Author: jan-elastic

docs/reference/query-languages/esql/esql-commands.md

@@ -194,6 +194,10 @@ SHOW INFO
 
 ## `CHANGE_POINT` [esql-change-point]
 
+::::{warning}
+This functionality is in technical preview and may be changed or removed in a future release. Elastic will work to fix any issues, but features in technical preview are not subject to the support SLA of official GA features.
+::::
+
 `CHANGE_POINT` detects spikes, dips, and change points in a metric.
 
 **Syntax**

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/action/EsqlCapabilities.java

@@ -843,7 +843,7 @@ public enum Cap {
         /**
          * Support change point detection "CHANGE_POINT".
          */
-        CHANGE_POINT(Build.current().isSnapshot()),
+        CHANGE_POINT,
 
         /**
          * Fix for https://github.com/elastic/elasticsearch/issues/120817