Hitting erros when using local and remote port forwarding

Hi,I am currently writing an application and then using the port forwarding. but I get errors when disconnecting from the SSHClient. **The version are:**
```
jdk: 1.8.0_381
SSHJ: 0.31.0
```

And when I call the close() method in `SSHJProxyGateWay.java`, I hit erros when `gatewaySession.disconnect()` is called ,the erros in log are as follows:

```
2024-12-24 11:00:14.763 [http-nio-8880-exec-4]-INFO -net.schmizz.sshj.transport.TransportImpl - Disconnected - BY_APPLICATION
2024-12-24 11:00:22.851 [http-nio-8880-exec-4]-INFO -net.schmizz.sshj.connection.channel.direct.LocalPortForwarder - Closing listener on /127.0.0.1:52229
2024-12-24 11:00:22.852 [http-nio-8880-exec-4]-INFO -net.schmizz.sshj.transport.TransportImpl - Disconnected - BY_APPLICATION
2024-12-24 11:00:22.853 [chan2soc]-ERROR-net.schmizz.sshj.common.StreamCopier - In pipe from < ChannelInputStream for Channel #0 > to java.net.SocketOutputStream@7d79d57c
net.schmizz.sshj.transport.TransportException: Disconnected
at net.schmizz.sshj.transport.TransportImpl.disconnect(TransportImpl.java:428)
at net.schmizz.sshj.transport.TransportImpl.disconnect(TransportImpl.java:419)
at net.schmizz.sshj.transport.TransportImpl.disconnect(TransportImpl.java:414)
at net.schmizz.sshj.SSHClient.disconnect(SSHClient.java:435)
at com.SSHJProxyGateWay.close(SSHJProxyGateWay.java:80)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:750)
2024-12-24 11:00:27.850 [sockmon]-ERROR-net.schmizz.concurrent.Promise - <> woke to: net.schmizz.sshj.transport.TransportException: [BY_APPLICATION] Disconnected
```

I am starting the local port forwarder in a separate thread. The main codes are as follows:

**proxy.java:**
```
int proxyPort = 0;
SSHClient proxyssh = new SSHClient();
proxyssh.addHostKeyVerifier(new PromiscuousVerifier());
proxyssh.connect(gateWayInfo.getIp(),gateWayInfo.getPort());
proxyssh.authPassword(gateWayInfo.getUserName(),gateWayInfo.getPassword());
Parameters params = new Parameters("127.0.0.1", 0, parentProxyInfo.getIp(), parentProxyInfo.getPort());
final ServerSocket ss = new ServerSocket();
ss.setReuseAddress(true);
ss.bind(new InetSocketAddress(params.getLocalHost(), params.getLocalPort()));
SSHJPortForwarder portForwarder = new SSHJPortForwarder(proxyssh,ss,params);
Thread thread = new Thread(portForwarder);
thread.start();
proxyPort = ss.getLocalPort();
SSHClient ssh = new SSHClient();
ssh.addHostKeyVerifier(new PromiscuousVerifier());
ssh.connect("127.0.0.1",proxyPort);
ssh.authPassword(username,password);
Session session = ssh.startSession();
SSHJProxyGateWay proxyGateWay = new SSHJProxyGateWay(proxyssh,proxyPort,session,ssh);
return proxyGateWay;
```

**SSHJPortForwarder.java:**
```
public class SSHJPortForwarder extends Thread implements Closeable {
private SSHClient sshClient;
private ServerSocket serverSocket;
private Parameters parameters;
public SSHJPortForwarder(SSHClient sshClient, ServerSocket serverSocket,Parameters parameters) {
this.sshClient = sshClient;
this.serverSocket = serverSocket;
this.parameters = parameters;
}
@Override
public void run() {
sshClient.newLocalPortForwarder(parameters, serverSocket).listen();
}

@Override
public void close() throws IOException {
serverSocket.close();
this.join();
}
}
```

**SSHJProxyGateWay.java**
```
public class SSHJProxyGateWay {
private SHClient gatewaySession;
private Integer localPort;
private Session proxySession;
private SSHClient proxyCliet;

public SSHJProxyGateWay(SSHClient gatewaySession, Integer localPort, Session proxySession,SSHClient proxyCliet){
this.gatewaySession = gatewaySession;
this.localPort = localPort;
this.proxySession = proxySession;
this.proxyCliet = proxyCliet;
}

public void close() {
if (proxyCliet != null) {
proxyCliet.disconnect();
}
if (gatewaySession != null && gatewaySession.isConnected()) {
gatewaySession.disconnect();
}
}
}
```

I found that issue in [Correctly disconnecting when using local and remote port forwarding #317](https://github.com/hierynomus/sshj/issues/317) are the same, and has fixed it,but I still hit the erros.So,any help with working out why this is happening would be greatly appreciated.

@hierynomus