Run h2 in daemon mode (#6446)

dolphinscheduler-standalone-server/src/main/java/org/apache/dolphinscheduler/server/StandaloneServer.java

@@ -110,7 +110,7 @@ public class StandaloneServer {
         System.setProperty(SPRING_DATASOURCE_USERNAME, "sa");
         System.setProperty(SPRING_DATASOURCE_PASSWORD, "");
 
-        Server.createTcpServer("-ifNotExists").start();
+        Server.createTcpServer("-ifNotExists", "-tcpDaemon").start();
 
         final DataSource ds = ConnectionFactory.getInstance().getDataSource();
         final ScriptRunner runner = new ScriptRunner(ds.getConnection(), true, true);