Package-level pytestmark in __init__.py no longer propagates to tests

a detailed description of the bug or problem you are having

A package-level pytestmark = pytest.mark.skip(...) defined in __init__.py is no longer propagated to tests inside that package. Tests that should be skipped run and fail instead.

This is a regression introduced by PR #6197.

pytest and operating system versions

pytest 9.1.1
Python 3.11.13
Linux

minimal example if possible

from pathlib import Path
import shutil
import pytest

root = Path("/tmp/pytest_pkg_skip_test")
shutil.rmtree(root, ignore_errors=True)
package = root / "skippedpkg"
package.mkdir(parents=True)
(package / "__init__.py").write_text(
    "import pytest\n"
    "pytestmark = pytest.mark.skip(reason='package is disabled')\n"
)
(package / "test_skipped.py").write_text(
    "def test_should_be_skipped():\n"
    "    assert False\n"
)

result = pytest.main(["-q", str(package)])
print("exit code:", int(result))
shutil.rmtree(root, ignore_errors=True)

Expected: 1 skipped, exit code 0
Actual: 1 failed (assert False runs because skip marker is not applied), exit code 1

Run the minimal example from the issue first, using skippedpkg/init.py and test_skipped.py, then read PR #6197 to understand the regression. Add coverage for the package-level pytestmark case; done means the test is reported as skipped and pytest exits with code 0 rather than failing.