Adding index refresh (#33647)

Author: benwtrent

x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/action/TransportDeleteForecastAction.java

@@ -211,6 +211,7 @@ private DeleteByQueryRequest buildDeleteByQuery(String jobId, List<String> forec
 
         QueryBuilder query = QueryBuilders.boolQuery().filter(innerBoolQuery);
         request.setQuery(query);
+        request.setRefresh(true);
         return request;
     }
 }