fix oltp sink update (#6285)

Author: nikvas0

ydb/core/kqp/ut/service/kqp_qs_queries_ut.cpp

@@ -2988,6 +2988,8 @@ Y_UNIT_TEST_SUITE(KqpQueryService) {
         void Execute() {
             AppConfig.MutableTableServiceConfig()->SetEnableOlapSink(true);
             AppConfig.MutableTableServiceConfig()->SetEnableOltpSink(true);
+            AppConfig.MutableTableServiceConfig()->SetEnableKqpDataQueryStreamLookup(true);
+            AppConfig.MutableTableServiceConfig()->SetOldLookupJoinBehaviour(false);
             auto settings = TKikimrSettings().SetAppConfig(AppConfig).SetWithSampleTables(false);
 
             Kikimr = std::make_unique<TKikimrRunner>(settings);