[2.19-dev] Disable Calcite by default

Signed-off-by: Lantao Jin <ltjin@amazon.com>

Author: LantaoJin

opensearch/src/main/java/org/opensearch/sql/opensearch/setting/OpenSearchSettings.java

@@ -170,7 +170,7 @@ public class OpenSearchSettings extends Settings {
   public static final Setting<?> CALCITE_ENGINE_ENABLED_SETTING =
       Setting.boolSetting(
           Key.CALCITE_ENGINE_ENABLED.getKeyValue(),
-          true,
+          false,
           Setting.Property.NodeScope,
           Setting.Property.Dynamic);