Fix to display statistics in webapps

Fixed to display the subscription statistics in web apps also by appending the sql query only to have DEVICE_TYPE_ID if it is not equals to 0.

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/dao/impl/AbstractGroupDAOImpl.java

@@ -1620,4 +1620,4 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
             throw new GroupManagementDAOException(msg, e);
         }
     }
-}
+}