fix: handle PythonFinalizationError in LoggerManager shutdown

[mephistofox]

Summary

• Fix PythonFinalizationError in LoggerManager.__del__ on Python 3.13+
• Add test for finalization-safe shutdown behavior

Problem

On Python 3.13+, importing or using ozonapi produces this error at interpreter exit:

Exception ignored while calling deallocator <function LoggerManager.__del__>:
  File "ozonapi/infrastructure/logging/manager.py", line 227, in __del__
  File "ozonapi/infrastructure/logging/manager.py", line 190, in shutdown
  File "logging/handlers.py", line 1640, in stop
  File "threading.py", line 1133, in join
PythonFinalizationError: cannot join thread at interpreter shutdown

Root cause

LoggerManager.__del__() calls shutdown() which calls QueueListener.stop(). The stop() method internally calls self._thread.join() — but during interpreter finalization, threads cannot be joined anymore.

Python 3.13 introduced PythonFinalizationError (PEP 768) which is now raised instead of silently failing.

This happens because:

1. LoggingSettings.USE_ASYNC defaults to True
2. Module-level manager = LoggerManager('ozonapi') + manager.configure() in __init__.py creates a QueueListener thread at import time
3. When the interpreter shuts down, __del__ tries to join that thread

Fix

Check sys.is_finalizing() before calling listener.stop():

• Normal execution: full listener.stop() with thread join (no behavior change)
• During finalization: close handlers directly without joining the thread

Test plan

• All 20 existing tests pass
• New test_shutdown_during_finalization test verifies the fix
• Tested on Python 3.14.2 where the error was originally observed

Co-authored-by: Mephisto dev@fxcode.ru