ESQL: Enable CATEGORIZE tests on non-snapshot builds (elastic#117881)

Author: alex-spies

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

@@ -396,7 +396,7 @@ public enum Cap {
         /**
          * Supported the text categorization function "CATEGORIZE".
          */
-        CATEGORIZE_V4(Build.current().isSnapshot()),
+        CATEGORIZE_V4,
 
         /**
          * QSTR function