[Bug] Crashed when closing the ssh tab

[rabbitLove520]

Description

A clear and concise description of the bug.

Steps to Reproduce

1. Go to '...'
2. Click on '...'
3. See error

Expected Behavior

Actual Behavior

Screenshots

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Environment

• OS: Windows 11
• SshManager Version: v1.0.5
• .NET Version: 10.0.201
• WebView2 Version: 100.0.1185.36

Logs

If applicable, include relevant log entries from %LocalAppData%\SshManager\logs\.

Application: SshManager.App.exe
CoreCLR Version: 9.0.1426.11910
.NET Version: 9.0.14
Description: The process was terminated due to an unhandled exception.
Exception Info: System.AggregateException: One or more errors occurred. (Client not connected.)
 ---> Renci.SshNet.Common.SshConnectionException: Client not connected.
   at Renci.SshNet.Session.SendMessage(Message message)
   at Renci.SshNet.Channels.Channel.SendMessage(Message message)
   at Renci.SshNet.Channels.ChannelSession.SendSignalRequest(String signalName)
   at Renci.SshNet.SshCommand.CancelAsync(Boolean forceKill, Int32 millisecondsTimeout)
   at Renci.SshNet.SshCommand.<>c.<ExecuteAsync>b__43_0(Object cmd)
   at System.Threading.CancellationTokenSource.Invoke(Delegate d, Object state, CancellationTokenSource source)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.CancellationTokenSource.ExecuteCallbackHandlers(Boolean throwOnFirstException)
   --- End of inner exception stack trace ---
   at System.Threading.CancellationTokenSource.ExecuteCallbackHandlers(Boolean throwOnFirstException)
   at System.Threading.TimerQueueTimer.Fire(Boolean isThreadPool)
   at System.Threading.TimerQueue.FireNextTimers()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()

Additional Context

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