Move capability to better location

Author: alex-spies

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

@@ -384,6 +384,12 @@ public enum Cap {
          */
         UNION_TYPES_AGG_CAST,
 
+        /**
+         * When pushing down {@code STATS count(field::type)} for a union type field, we wrongly used a synthetic attribute name in the
+         * query instead of the actual field name. This led to 0 counts instead of the correct result.
+         */
+        FIX_COUNT_PUSHDOWN_FOR_UNION_TYPES,
+
         /**
          * Fix to GROK validation in case of multiple fields with same name and different types
          * https://github.com/elastic/elasticsearch/issues/110533
@@ -1038,13 +1044,7 @@ public enum Cap {
         /**
          * Support for the SAMPLE command
          */
-        SAMPLE(Build.current().isSnapshot()),
-
-        /**
-         * When pushing down {@code STATS count(field::type)} for a union type field, we wrongly used a synthetic attribute name in the
-         * query instead of the actual field name. This led to 0 counts instead of the correct result.
-         */
-        FIX_COUNT_PUSHDOWN_FOR_UNION_TYPES;
+        SAMPLE(Build.current().isSnapshot());
 
         private final boolean enabled;