[Bug] The websocket server has already been created with port = 8080. Please set the option cdc.port = 8080.

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/iotdb/issues) and found nothing similar.

### Version

linux
lotdb: 1.3.2

### Describe the bug and provide the minimal reproduce step

1、使用flink cdc sql
CREATE TABLE iotable_table_3 (
`Time_` bigint,
`root.zhang.table3.id` int,
`root.zhang.table3.name` string,
`root.zhang.table3.address` STRING
) WITH (
'connector' = 'IoTDB',
'nodeUrls'='ddp1:6667',
'mode'='cdc',
'cdc.task.name'='test1',
'cdc.pattern'='root.zhang.table3'
)
2、直接select * from iotable_table_3，此时没有数据。查看日志后发现，WebSocketConnectorServer启动失败，端口默认8080，被占用
3、切换端口：
CREATE TABLE iotable_table_2 (
`Time_` bigint,
`root.zhang.table3.id` int,
`root.zhang.table3.name` string,
`root.zhang.table3.address` STRING
) WITH (
'connector' = 'IoTDB',
'nodeUrls'='ddp1:6667',
'mode'='cdc',
'cdc.task.name'='test2',
'cdc.pattern'='root.zhang.table3',
'cdc.port'='18089'
)
但是发现flink 任务日志报错
org.apache.iotdb.rpc.StatementExecutionException: 1107: The websocket server has already been created with port = 8080. Please set the option cdc.port = 8080.
at org.apache.iotdb.rpc.RpcUtils.verifySuccess(RpcUtils.java:94)
at org.apache.iotdb.session.SessionConnection.executeNonQueryStatement(SessionConnection.java:474)
at org.apache.iotdb.session.Session.executeNonQueryStatement(Session.java:914)
at org.apache.iotdb.flink.sql.function.IoTDBCDCSourceFunction.open(IoTDBCDCSourceFunction.java:134)
at org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:34)
at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:101)
at org.apache.flink.streaming.runtime.tasks.RegularOperatorChain.initializeStateAndOpenOperators(RegularOperatorChain.java:107)
at org.apache.flink.streaming.runtime.tasks.StreamTask.restoreGates(StreamTask.java:734)
at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.call(StreamTaskActionExecutor.java:100)
at org.apache.flink.streaming.runtime.tasks.StreamTask.restoreInternal(StreamTask.java:709)
at org.apache.flink.streaming.runtime.tasks.StreamTask.restore(StreamTask.java:675)
at org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:952)
at org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:921)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:745)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:562)
at java.lang.Thread.run(Thread.java:750)

### What did you expect to see?

能够切换端口，并且通过flink-sql查出来iotdb cdc的数据

### What did you see instead?

这个方法有问题。

它会被这样调用：

new WebSocketConnectorServer成功后，直接启动了线程。但是线程内部运行报错，这个实例还在private static final AtomicReference instance，因此每次获取都是以前的旧实例。我切换端口也不会管用

### Anything else?

_No response_

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

Start with org.apache.iotdb.flink.sql.function.IoTDBCDCSourceFunction.open, then inspect the WebSocketConnectorServer creation and the static instance behavior described in the report. Reproduce the Flink SQL CDC setup with ports 8080 and 18089, and verify that changing cdc.port starts the server on the requested port and allows CDC data to be queried.

Written by the indexing model from the issue text.