RuntimeError: absolute path '.../dataclasses.py' is not a descendant of the current working directory or of the system's python library

Hi.

In fpdf2 we have been using pdoc3 for several years:
thank you for maintaining this great tool!

I noticed a warning in our execution log:
https://github.com/py-pdf/fpdf2/actions/runs/13482969652/job/37670544099?pr=1374

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.13.2/x64/lib/python3.13/site-packages/pdoc/html_helpers.py", line 569, in format_git_link
    path = _project_relative_path(abs_path)
  File "/opt/hostedtoolcache/Python/3.13.2/x64/lib/python3.13/site-packages/pdoc/html_helpers.py", line 635, in _project_relative_path
    raise RuntimeError(
    ...<2 lines>...
    )
RuntimeError: absolute path '/opt/hostedtoolcache/Python/3.13.2/x64/lib/python3.13/dataclasses.py' is not a descendant of the current working directory or of the system's python library.

I do not quite understand the origin of this stacktrace,
but I suspect that's maybe due to this usage of dataclasses.replace as a method:
https://github.com/py-pdf/fpdf2/blob/2.8.2/fpdf/fonts.py#L75

Do you know how we could prevent this error to be raised?

Start with pdoc/html_helpers.py at format_git_link and _project_relative_path, around lines 569 and 635, then reproduce the report using the linked fpdf2 dataclasses.replace usage. Trace why dataclasses.py is resolved outside the project and verify that documenting fpdf2 no longer raises this RuntimeError.