Tqdm process_map doesn't work with PyPy

[eblis]

• I have marked all applicable categories:
  • exception-raising bug
  • visual output bug
• I have visited the [source website], and in particular
  read the [known issues]
• I have searched through the [issue tracker] for duplicates
• I have mentioned version numbers, operating system and
  environment, where applicable:

4.64.1 3.9.15 (21401ebc2df332b6be6e3d364a985e951a72bbbd, Dec 05 2022, 18:37:18)
[PyPy 7.3.10 with MSC v.1929 64 bit (AMD64)] win32

    values = process_map(self.count, candidates, max_workers=8, ncols=100, desc="Candidates", position=0)
  File "C:\Program Files\PyPy\lib\site-packages\tqdm\contrib\concurrent.py", line 130, in process_map
    return _executor_map(ProcessPoolExecutor, fn, *iterables, **tqdm_kwargs)
  File "C:\Program Files\PyPy\lib\site-packages\tqdm\contrib\concurrent.py", line 76, in _executor_map
    return list(tqdm_class(ex.map(fn, *iterables, **map_args), **kwargs))
  File "C:\Program Files\PyPy\Lib\concurrent\futures\process.py", line 752, in map
    results = super().map(partial(_process_chunk, fn),
  File "C:\Program Files\PyPy\Lib\concurrent\futures\_base.py", line 598, in map
    fs = [self.submit(fn, *args) for args in zip(*iterables)]
  File "C:\Program Files\PyPy\Lib\concurrent\futures\_base.py", line 598, in <listcomp>
    fs = [self.submit(fn, *args) for args in zip(*iterables)]
  File "C:\Program Files\PyPy\Lib\concurrent\futures\process.py", line 723, in submit
    self._adjust_process_count()
AttributeError: 'ProcessPoolExecutor' object has no attribute '_adjust_process_count'

[eblis]

I've raised an issue with PyPy, this seems to be a problem with their ProcessPoolExecutor, not tqdm.