Flaky test_scattering_angles_with_gravity_invariant_under_rotation ?

[nvaytet]

See run here: https://github.com/scipp/scippneutron/actions/runs/22857790890/job/66302875350?pr=685

=================================== FAILURES ===================================
_________ test_scattering_angles_with_gravity_invariant_under_rotation _________

    @given(rotation=rotations())
>   @settings(max_examples=10)
                   ^^^

tests/conversion/beamline_conversions_test.py:695: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
tests/conversion/beamline_conversions_test.py:721: in test_scattering_angles_with_gravity_invariant_under_rotation
    sc.testing.assert_allclose(original['two_theta'], rotated['two_theta'])
.tox/py311/lib/python3.11/site-packages/scipp/testing/assertions.py:70: in assert_allclose
    return _assert_similar(_assert_allclose_impl, a, b, rtol=rtol, atol=atol, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/py311/lib/python3.11/site-packages/scipp/testing/assertions.py:104: in _assert_similar
    impl(*args, **kwargs)
.tox/py311/lib/python3.11/site-packages/scipp/testing/assertions.py:136: in _assert_allclose_impl
    _assert_allclose_data(a, b, **kwargs)
.tox/py311/lib/python3.11/site-packages/scipp/testing/assertions.py:244: in _assert_allclose_data
    _assert_allclose_variable_data(a, b, **kwargs)
.tox/py311/lib/python3.11/site-packages/scipp/testing/assertions.py:255: in _assert_allclose_variable_data
    _assert_allclose_dense_variable_data(a, b, **kwargs)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

a = <scipp.Variable> (wavelength: 3, det: 2)    float64            [rad]  [0.685674, 0.552127, ..., 0.685672, 0.552129]
b = <scipp.Variable> (wavelength: 3, det: 2)    float64            [rad]  [0.685671, 0.552128, ..., 0.685673, 0.552126]
rtol = None, atol = None, kwargs = {}

    def _assert_allclose_dense_variable_data(
        a: Variable,
        b: Variable,
        rtol: Variable | None = None,
        atol: Variable | None = None,
        **kwargs: Any,
    ) -> None:
        if rtol is not None:
            kwargs['rtol'] = rtol.to(unit='dimensionless').value
        if atol is not None:
            if hasattr(a, 'unit'):
                atol = atol.to(unit=a.unit)
            else:
                atol = atol.to(unit='dimensionless')
            kwargs['atol'] = atol.value
    
        with _add_note('values'):
>           np.testing.assert_allclose(
                a.values, b.values, err_msg='when comparing values', **kwargs
            )
E           AssertionError: 
E           Not equal to tolerance rtol=1e-07, atol=0
E           when comparing values
E           Mismatched elements: 6 / 6 (100%)
E           Max absolute difference among violations: 2.36802898e-06
E           Max relative difference among violations: 4.19456698e-06
E            ACTUAL: array([[0.685674, 0.552127],
E                  [0.685672, 0.552128],
E                  [0.685672, 0.552129]])
E            DESIRED: array([[0.685671, 0.552128],
E                  [0.685673, 0.552127],
E                  [0.685673, 0.552126]])
E           in values
E           Falsifying example: test_scattering_angles_with_gravity_invariant_under_rotation(
E               rotation=(lambda q: sc.spatial.rotation(value=q / np.linalg.norm(q)))(
E                   array([4.95652019e-160, 4.95652019e-160, 4.95652019e-160, 4.95652019e-160]),
E               ),
E           )
E           Explanation:
E               These lines were always and only run by failing examples:
E                   /home/runner/work/scippneutron/scippneutron/.tox/py311/lib/python3.11/site-packages/numpy/_core/arrayprint.py:1016
E                   /home/runner/work/scippneutron/scippneutron/.tox/py311/lib/python3.11/site-packages/numpy/_core/arrayprint.py:1021
E                   /home/runner/work/scippneutron/scippneutron/.tox/py311/lib/python3.11/site-packages/numpy/_core/fromnumeric.py:102
E                   /home/runner/work/scippneutron/scippneutron/.tox/py311/lib/python3.11/site-packages/numpy/testing/_private/utils.py:872
E                   /home/runner/work/scippneutron/scippneutron/.tox/py311/lib/python3.11/site-packages/numpy/testing/_private/utils.py:880
E                   (and 19 more with settings.verbosity >= verbose)