allure-pytest raises an exception when writing to log from a thread started inside pytest_generate_tests

#### I'm submitting a ...
- [x] bug report

#### What is the current behavior?
I have a function that creates a thread which writes some information in the log. When I try to call it from `pytest_generate_tests` allure-pytest raises the following `StopIteration` exception:
```
platform linux -- Python 3.9.16, pytest-7.4.0, pluggy-1.2.0
rootdir: /mnt/c/storage/allure_bug
plugins: allure-pytest-2.13.2
collecting ... Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python3.9/threading.py", line 980, in _bootstrap_inner
self.run()
File "/usr/lib/python3.9/threading.py", line 917, in run
self._target(*self._args, **self._kwargs)
File "/mnt/c/storage/allure_bug/conftest.py", line 17, in _thread
log.warning('thread')
File "/usr/lib/python3.9/logging/init.py", line 1458, in warning
self._log(WARNING, msg, args, **kwargs)
File "/usr/lib/python3.9/logging/init.py", line 1589, in _log
self.handle(record)
File "/usr/lib/python3.9/logging/init.py", line 1599, in handle
self.callHandlers(record)
File "/usr/lib/python3.9/logging/init.py", line 1661, in callHandlers
hdlr.handle(record)
File "/usr/lib/python3.9/logging/init.py", line 952, in handle
self.emit(record)
File "/mnt/c/storage/allure_bug/conftest.py", line 9, in emit
with step(f'[{record.levelname}] {record.getMessage()}'):
File "/tmp/test_venv/lib/python3.9/site-packages/allure_commons/_allure.py", line 179, in enter
plugin_manager.hook.start_step(uuid=self.uuid, title=self.title, params=self.params)
File "/tmp/test_venv/lib/python3.9/site-packages/pluggy/_hooks.py", line 433, in call
return self._hookexec(self.name, self._hookimpls, kwargs, firstresult)
File "/tmp/test_venv/lib/python3.9/site-packages/pluggy/_manager.py", line 112, in _hookexec
return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
File "/tmp/test_venv/lib/python3.9/site-packages/pluggy/_callers.py", line 116, in _multicall
raise exception.with_traceback(exception.traceback)
File "/tmp/test_venv/lib/python3.9/site-packages/pluggy/_callers.py", line 80, in _multicall
res = hook_impl.function(*args)
File "/tmp/test_venv/lib/python3.9/site-packages/allure_pytest/listener.py", line 48, in start_step
self.allure_logger.start_step(None, uuid, step)
File "/tmp/test_venv/lib/python3.9/site-packages/allure_commons/reporter.py", line 128, in start_step
parent_uuid = parent_uuid if parent_uuid else self._last_executable()
File "/tmp/test_venv/lib/python3.9/site-packages/allure_commons/reporter.py", line 71, in _last_executable
for _uuid in reversed(self._items):
File "/tmp/test_venv/lib/python3.9/site-packages/allure_commons/reporter.py", line 39, in reversed
return self.thread_context.reversed()
File "/tmp/test_venv/lib/python3.9/site-packages/allure_commons/reporter.py", line 21, in thread_context
uuid, last_item = next(reversed(self._thread_context[self._init_thread].items()))
StopIteration
collected 1 item

test_bug.py test
.
```

#### If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem
1. Install requirements `pip install pytest allure-pytest`
2. Prepare the demo test suite:

conftest.py
```python
import logging
from threading import Thread

from allure import step

class AllureLoggerHandler(logging.Handler):
def emit(self, record):
with step(f'[{record.levelname}] {record.getMessage()}'):
pass

log = logging.getLogger()
allure_handler = AllureLoggerHandler()
log.addHandler(allure_handler)

def _thread():
log.warning('thread')

def pytest_generate_tests(metafunc):
log.info('generate')
thread = Thread(target=_thread)
thread.start()
thread.join(100)
```
test_bug.py
```python
def test_allure_log():
print('test')
```
3. Run test: `pytest -s --alluredir=./allure`

#### What is the expected behavior?
Test suite works without any exceptions

#### What is the motivation / use case for changing the behavior?

#### Please tell us about your environment:

- Allure version: 2.22.0
- Test framework: pytest 7.4.0
- Allure adaptor: allure-pytest 2.13.2

#### Other information

[//]: # (
. e.g. detailed explanation, stacktraces, related issues, suggestions
. how to fix, links for us to have more context, eg. Stackoverflow, Gitter etc
)

Tái hiện lỗi bằng các ví dụ conftest.py và test_bug.py, bắt đầu từ pytest_generate_tests và trình xử lý logging theo luồng. Theo dõi việc tạo bước Allure được hiển thị trong traceback và xác minh hành vi của ngữ cảnh luồng. Được xem là hoàn tất khi ví dụ chạy bằng pytest -s --alluredir=./allure mà không phát sinh ngoại lệ StopIteration.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.