PYTHON-4414 interruptInUseConnections should cancel pending connections too

[ShaneHarvey]

PYTHON-4414 interruptInUseConnections should cancel pending connections too

Judging from the test logs, this appears to be a minor bug in the implementation of interruptInUseConnections added in PYTHON-3175. If the pool is cleared simultaneously while a thread is creating a connection, the pending connection is not cancelled or closed. Instead the connection is created normally and added to the pool as shown in the log of the failed test:

Events:
 [2024/04/29 03:44:47.090] PoolCreatedEvent(('localhost', 27017), {})
 [2024/04/29 03:44:47.090] PoolReadyEvent(('localhost', 27017))
 [2024/04/29 03:44:47.090] ConnectionCheckOutStartedEvent(('localhost', 27017))
 [2024/04/29 03:44:47.090] ConnectionCreatedEvent(('localhost', 27017), 1)
 [2024/04/29 03:44:47.090] PoolClearedEvent(('localhost', 27017), None, True)
 [2024/04/29 03:44:47.090] ConnectionReadyEvent(('localhost', 27017), 1, 10.015425856999968)
 [2024/04/29 03:44:47.090] ConnectionCheckedOutEvent(('localhost', 27017), 1, 10.018921869999986)

The fix is to ensure that pending connections are interrupted as well.