pytest --doctest-modules crashes on file-level `__test__ = False`

A file level __test__ = False succesfully stops pytest from collecting any test from that file, however when running pytest --doctest- modules on the same file, this error appears:

/sw/Python/Ubuntu-22.04/3.10.5/lib/python3.10/site-packages/_pytest/runner.py:341: in from_call
    result: Optional[TResult] = func()
/sw/Python/Ubuntu-22.04/3.10.5/lib/python3.10/site-packages/_pytest/runner.py:372: in <lambda>
    call = CallInfo.from_call(lambda: list(collector.collect()), "collect")
/sw/Python/Ubuntu-22.04/3.10.5/lib/python3.10/site-packages/_pytest/doctest.py:587: in collect
    for test in finder.find(module, module.__name__):
/sw/Python/Ubuntu-22.04/3.10.5/lib/python3.10/doctest.py:940: in find
    self._find(tests, obj, name, module, source_lines, globs, {})
/sw/Python/Ubuntu-22.04/3.10.5/lib/python3.10/site-packages/_pytest/doctest.py:536: in _find
    super()._find(  # type:ignore[misc]
/sw/Python/Ubuntu-22.04/3.10.5/lib/python3.10/doctest.py:1018: in _find
    for valname, val in getattr(obj, '__test__', {}).items():
E   AttributeError: 'bool' object has no attribute 'items'

It's enoough to have a file with only this content to see the behavior:

__test__ = False

Version: pytest 7.4.3

Start with pytest's doctest collection path and reproduce the issue using a Python file containing only __test__ = False, then run pytest --doctest-modules against it. Done means the file is skipped without an AttributeError, while normal pytest collection continues to honor the file-level setting.