Japanese Tokenizer`RuntimeError: Already borrowed`

* Japanese tokenizer specifically began throwing `RuntimeError: Already borrowed` when receiving multi-threaded requests.
* We noticed this error began on 2025-01-15, and did not previously struggle with this.
* Other language tokenizers are still able to handle multi-threading (see english and chinese succeed in example below, while japanese fails)

## How to reproduce the behaviour
`python -m spacy download en_core_web_md`
`python -m spacy download zh_core_web_md `
`python -m spacy download ja_core_news_md `

`python3` (open shell, paste below in):
```
import spacy
import pandas as pd
from multiprocessing.dummy import Pool as ThreadPool

data = ['string'] * 10
langs = [
("English", spacy.load("en_core_web_md")),
("Chinese", spacy.load("zh_core_web_md")),
("Japanese", spacy.load("ja_core_news_md"))
]

for (lang, model) in langs:
print(lang)
pool = ThreadPool(10)
pool.map(model, data)
pool.close()
pool.join()
```

Output:
```
English
[string, string, string, string, string, string, string, string, string, string]
Chinese
[string, string, string, string, string, string, string, string, string, string]
Japanese
Traceback (most recent call last):
File "", line 4, in
File "/home/jbartlett/.pyenv/versions/3.11.11/lib/python3.11/multiprocessing/pool.py", line 367, in map
return self._map_async(func, iterable, mapstar, chunksize).get()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/jbartlett/.pyenv/versions/3.11.11/lib/python3.11/multiprocessing/pool.py", line 774, in get
raise self._value
File "/home/jbartlett/.pyenv/versions/3.11.11/lib/python3.11/multiprocessing/pool.py", line 125, in worker
result = (True, func(*args, **kwds))
^^^^^^^^^^^^^^^^^^^
File "/home/jbartlett/.pyenv/versions/3.11.11/lib/python3.11/multiprocessing/pool.py", line 48, in mapstar
return list(map(*args))
^^^^^^^^^^^^^^^^
File "/home/jbartlett/data-airflow/workspace/ml-services/slack-ml/.venv/lib/python3.11/site-packages/spacy/language.py", line 1037, in __call__
doc = self._ensure_doc(text)
^^^^^^^^^^^^^^^^^^^^^^
File "/home/jbartlett/data-airflow/workspace/ml-services/slack-ml/.venv/lib/python3.11/site-packages/spacy/language.py", line 1128, in _ensure_doc
return self.make_doc(doc_like)
^^^^^^^^^^^^^^^^^^^^^^^
File "/home/jbartlett/data-airflow/workspace/ml-services/slack-ml/.venv/lib/python3.11/site-packages/spacy/language.py", line 1120, in make_doc
return self.tokenizer(text)
^^^^^^^^^^^^^^^^^^^^
File "/home/jbartlett/data-airflow/workspace/ml-services/slack-ml/.venv/lib/python3.11/site-packages/spacy/lang/ja/__init__.py", line 56, in __call__
sudachipy_tokens = self.tokenizer.tokenize(text)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: Already borrowed
```

## Info about spaCy
python -m spacy info --markdown

- **spaCy version:** 3.7.5
- **Platform:** Linux-6.8.0-1021-aws-x86_64-with-glibc2.35
- **Python version:** 3.11.11
- **Pipelines:** ja_core_news_lg (3.7.0), ja_core_news_md (3.7.0), en_core_web_md (3.7.1), zh_core_web_sm (3.7.0), ja_core_news_sm (3.7.0), zh_core_web_md (3.7.0)