Fatal Python Error pyOCD crashes Python when used in thread on macOS

pyOCD debug probe discovery crashes Python when used in threading.Thread on MacOS

Tested with Python 3.8 and 3.11.2 with pyOCD 0.34.3

Code snippet below:

from threading import Thread

from pyocd.core.helpers import ConnectHelper

def task():
    probes = ConnectHelper.get_all_connected_probes()
    print(probes)
 
thread = Thread(target=task)
thread.start()
thread.join()

Application crashes during closing in weakref module when releasing memory.

Fatal Python error: Illegal instructionCurrent thread 0x00000001142c2600 (most recent call first):
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/weakref.py", line 591 in call
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/weakref.py", line 667 in _exitfunc
The only suspicious code lies in the pyocd/core/session.py

Session._current_session = weakref.ref(self)

Reproduce the crash on macOS using the threaded code snippet with Python 3.8 or 3.11.2 and pyOCD 0.34.3. Start by inspecting pyocd/core/session.py, especially Session._current_session and its weakref usage. Done means probe discovery from a threading.Thread no longer causes the fatal shutdown error.