Fix ES|QL search context creation to use correct results type

server/src/main/java/org/elasticsearch/search/SearchService.java

@@ -1451,7 +1451,8 @@ public SearchContext createSearchContext(ShardSearchRequest request, TimeValue t
         final Engine.SearcherSupplier reader = indexShard.acquireSearcherSupplier();
         final ShardSearchContextId id = new ShardSearchContextId(sessionId, idGenerator.incrementAndGet(), reader.getSearcherId());
         try (ReaderContext readerContext = new ReaderContext(id, indexService, indexShard, reader, -1L, true)) {
-            DefaultSearchContext searchContext = createSearchContext(readerContext, request, timeout, ResultsType.NONE);
+            // Use ResultsType.QUERY so that the created search context can execute queries correctly.
+            DefaultSearchContext searchContext = createSearchContext(readerContext, request, timeout, ResultsType.QUERY);
             searchContext.addReleasable(readerContext.markAsUsed(0L));
             return searchContext;
         }

server/src/test/java/org/elasticsearch/search/SearchServiceSingleNodeTests.java

@@ -2001,6 +2001,7 @@ public void testCreateSearchContext() throws IOException {
             clusterAlias
         );
         try (SearchContext searchContext = service.createSearchContext(request, new TimeValue(System.currentTimeMillis()))) {
+            assertTrue(searchContext.searcher().hasExecutor());
             SearchShardTarget searchShardTarget = searchContext.shardTarget();
             SearchExecutionContext searchExecutionContext = searchContext.getSearchExecutionContext();
             String expectedIndexName = clusterAlias == null ? index : clusterAlias + ":" + index;