SSHD client causing memory leak due to SSHD calls in vast number around 1.8k

### Version

2.9.2

### Bug description

We are using Apache mina jars v2.9.2 in our application. Our customer on this version, reported the memory leak issue with the Apache mina sftp client, and there is a build of 1.8k plus threads of sshd-SschClient.

### Actual behavior

Getting memory leak with apache mina sftp client

### Expected behavior

it should be able to process without memory leak.

### Relevant log output

```Shell
From the thread dump

Thread Name sshd-SshClient[fd98cb5e]-timer-thread-1
State Runnable
Java Stack
at sun/misc/Unsafe.park(Native Method)
at java/util/concurrent/locks/LockSupport.parkNanos(LockSupport.java:226(Compiled Code))
at java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2089(Compiled Code))
at java/util/concurrent/ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1104(Compiled Code))
at java/util/concurrent/ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:820(Compiled Code))
at java/util/concurrent/ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1085(Compiled Code))
at java/util/concurrent/ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145(Compiled Code))
at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635(Compiled Code))
at java/lang/Thread.run(Thread.java:826(Compiled Code))
Native Stack
ZwWaitForSingleObject+0x14 (0x00007FFAC378FC74 [ntdll+0x9fc74])
WaitForSingleObjectEx+0x93 (0x00007FFAC06A4513 [KERNELBASE+0x34513])
monitor_wait_original+0x917 (omrthread.c:4686, 0x00007FFAA3DE7277 [J9THR29+0x7277])
omrthread_monitor_wait+0x43 (omrthread.c:4402, 0x00007FFAA3DE2B13 [J9THR29+0x2b13])
internalAcquireVMAccessNoMutexWithMask+0x2fc (vmaccess.cpp:386, 0x00007FFAA0EEA16C [j9vm29+0x6a16c])
internalAcquireVMAccessClearStatus+0x98 (vmaccess.cpp:338, 0x00007FFAA0EE9CD8 [j9vm29+0x69cd8])
threadParkImpl+0x19e (threadpark.c:98, 0x00007FFAA0F4594E [j9vm29+0xc594e])
(0x00007FFA8EE5D2CE)
(0x0000000000000004)
(0x0000000000000001)
(0x000000003B1B4A28)
(0x00000001FFC5FB70)
```

### Other information

We have checked other close issue https://github.com/apache/mina-sshd/issues/354 , suggestion was that use 2.9.2 version of jar so issue should be fix but still facinge same issue with 2.9.2