Shutdown errors in dev

[lancetarn]

Python 3.12, scout_apm_python 3.1.0
Looks like there are instances where the Core Agent doesn't quite shut down gracefully. I've seen this happen during server reloads as well as django-admin commands (which is probably a different question altogether). This might not be a problem, exactly, but it spews stacktraces.

Exception ignored in atexit callback: <function shutdown at 0x104ed9bc0>
Traceback (most recent call last):
  File "...lib/python3.12/site-packages/scout_apm/core/__init__.py", line 92, in shutdown
    CoreAgentSocketThread.wait_until_drained(
  File "...lib/python3.12/site-packages/scout_apm/core/agent/socket.py", line 62, in wait_until_drained
    cls.ensure_started()
  File "...lib/python3.12/site-packages/scout_apm/core/threading.py", line 23, in ensure_started
    cls._instance.start()
  File "...lib/python3.12/threading.py", line 992, in start
    _start_new_thread(self._bootstrap, ())
RuntimeError: can't create new thread at interpreter shutdown