`pkgutil.find_loader` deprecation warning attributed to incorrect module when calling `pkgutil.get_loader`

[amblina]

Bug report

Bug description:

Given the following warnings configuration in pyproject.toml:

filterwarnings = [
    '''ignore:.*pkgutil\.find_loader.*:DeprecationWarning:gi''',
    '''ignore:.*pkgutil\.get_loader.*:DeprecationWarning:gi''',
]

I still get the following traceback:

    from gi.repository import GLib
<frozen importlib._bootstrap>:1360: in _find_and_load
    ???
<frozen importlib._bootstrap>:1331: in _find_and_load_unlocked
    ???
<frozen importlib._bootstrap>:921: in _load_unlocked
    ???
<frozen importlib._bootstrap>:813: in module_from_spec
    ???
/var/lib/<redacted>/.venv/lib/python3.13/site-packages/gi/importer.py:147: in create_module
    dynamic_module = load_overrides(introspection_module)
/var/lib/<redacted>/.venv/lib/python3.13/site-packages/gi/overrides/__init__.py:108: in load_overrides
    override_loader = get_loader(override_package_name)
/opt/ont/python/lib/python3.13/pkgutil.py:291: in get_loader
    return find_loader(fullname)
/opt/ont/python/lib/python3.13/pkgutil.py:301: in find_loader
    warnings._deprecated("pkgutil.find_loader",
/opt/ont/python/lib/python3.13/warnings.py:669: in _deprecated
    warn(msg, DeprecationWarning, stacklevel=3)
E   DeprecationWarning: 'pkgutil.find_loader' is deprecated and slated for removal in Python 3.14; use importlib.util.find_spec() instead

Removing :gi and replacing with :pkgutil in toml ignores the warning as specified however, the library that is calling pkgutil is gi not pkgutil. This causes misattribution and these issues are more likely to result in people ignoring warnings in general.

CPython versions tested on:

3.13

Operating systems tested on:

Linux

[brettcannon]

Python itself doesn't use pyproject.toml, so I'm not sure what tool you're using to filter warnings. Can you come up with a reproducer that doesn't go through another tool?