Handle "np.asfarray was removed in the NumPy 2.0 release"

[pllim]

Example log: https://github.com/astropy/astropy/actions/runs/5989440429/job/16245628701

Need to update the astropy/units/quantity_helper/function_helpers.py module.

astropy/units/__init__.py:23: in <module>
    from .quantity import *
astropy/units/quantity.py:35: in <module>
    from .quantity_helper import can_have_arbitrary_unit, check_output, converters_and_unit
astropy/units/quantity_helper/__init__.py:16: in <module>
    from . import erfa, function_helpers, helpers, scipy_special
astropy/units/quantity_helper/function_helpers.py:185: in <module>
    np.copy, np.asfarray, np.real_if_close, np.sort_complex, np.resize,
numpy/__init__.py:351: in __getattr__
    raise AttributeError(
E   AttributeError: `np.asfarray` was removed in the NumPy 2.0 release. Use `np.asarray` with a proper dtype instead.