Error if an extensition has been compiled for several python version.

Expected Behavior

I am documenting a package containing fortran extension build with f2py/gfortran/gcc on linux.
Once the package is installed the root folder contains mypkg.cpython-39-x86_64-linux-gnu.so which is imported in the __init__.py file.
If I run pdoc, it works fine ;-)

# Here I use py39
pdoc3 --force --config latex_math=True --html pypolsys
/home/xyz/anaconda3/envs/work/lib/python3.9/site-packages/pdoc/__init__.py:754: UserWarning: Couldn't read PEP-224 variable docstrings from <Module 'pypolsys.polsys'>: source code not available
  m = Module(import_module(fullname),
html/pypolsys/index.html
html/pypolsys/polsys.html
html/pypolsys/test.html
html/pypolsys/utils.html
html/pypolsys/version.html

I am using several python version (the package are installed in editable mode) and I can have also mypkg.cpython-38-x86_64-linux-gnu.so or mypkg.cpython-310-x86_64-linux-gnu.so in the same place. Then pdoc crashes.

# Here I use py39
pdoc3 --force --config latex_math=True --html pypolsys
/home/xyz/anaconda3/envs/work/lib/python3.9/site-packages/pdoc/__init__.py:754: UserWarning: Couldn't read PEP-224 variable docstrings from <Module 'pypolsys.polsys'>: source code not available
  m = Module(import_module(fullname),
Traceback (most recent call last):
  File "/home/xyz/anaconda3/envs/work/lib/python3.9/site-packages/pdoc/__init__.py", line 222, in import_module
    module = importlib.import_module(module_path)
  File "/home/xyz/anaconda3/envs/work/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 981, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'pypolsys.polsys.cpython-310-x86_64-linux-gnu'; 'pypolsys.polsys' is not a package

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/xyz/anaconda3/envs/work/bin/pdoc3", line 8, in <module>
    sys.exit(main())
  File "/home/xyz/anaconda3/envs/work/lib/python3.9/site-packages/pdoc/cli.py", line 534, in main
    modules = [pdoc.Module(module, docfilter=docfilter,
  File "/home/xyz/anaconda3/envs/work/lib/python3.9/site-packages/pdoc/cli.py", line 534, in <listcomp>
    modules = [pdoc.Module(module, docfilter=docfilter,
  File "/home/xyz/anaconda3/envs/work/lib/python3.9/site-packages/pdoc/__init__.py", line 754, in __init__
    m = Module(import_module(fullname),
  File "/home/xyz/anaconda3/envs/work/lib/python3.9/site-packages/pdoc/__init__.py", line 224, in import_module
    raise ImportError(f'Error importing {module!r}: {e.__class__.__name__}: {e}')
ImportError: Error importing 'pypolsys.polsys.cpython-310-x86_64-linux-gnu': ModuleNotFoundError: No module named 'pypolsys.polsys.cpython-310-x86_64-linux-gnu'; 'pypolsys.polsys' is not a package

It is noteworthy that arbitrary .so file like abcd.so is also a problem.
We could expect that pdoc ignore such additional .so file (filter by python version, just pick one, ...)

Steps to Reproduce

1. Pick a python package with fortran extension
2. Copy and rename the .so with another python version to add a second .so file
3. Call pdoc3 mypkg

Additional info

• pdoc version:
  pdoc 0.10.0

Reproduce the failure with multiple .so files, then inspect pdoc/cli.py around the module construction at line 534 and pdoc/init.py around import_module at line 222 and Module handling at line 754. Confirm the behavior for version-tagged and arbitrary .so files; done means pdoc no longer attempts to import unrelated extension filenames while documenting the package.