Sets not accepted as being iterable by checkvalue

[MicahGale]

Bug Description

When passing a set to an argument that is expecting an iterable a TypeError is raised.

Steps to Reproduce

import openmc
openmc.ParticleFilter({"neutron", "photon"})

Returns:

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Cell In[2], line 1
----> 1 openmc.ParticleFilter({"neutron"})

File ~/dev/pers-openmc/openmc/filter.py:114, in Filter.__init__(self, bins, filter_id)
    113 def __init__(self, bins, filter_id=None):
--> 114     self.bins = bins
    115     self.id = filter_id

File ~/dev/pers-openmc/openmc/filter.py:767, in ParticleFilter.bins(self, bins)
    764 @Filter.bins.setter
    765 def bins(self, bins):
    766     bins = np.atleast_1d(bins)
--> 767     cv.check_iterable_type('filter bins', bins, str)
    768     for edge in bins:
    769         cv.check_value('filter bin', edge, _PARTICLES)

File ~/dev/pers-openmc/openmc/checkvalue.py:132, in check_iterable_type(name, value, expected_type, min_depth, max_depth)
    128     if len(tree) > max_depth:
    129         msg = (f'Error setting {name}: Found an iterable at '
    130                f'{ind_str}, items in that iterable exceed the '
    131                f'maximum depth of {max_depth}')
--> 132         raise TypeError(msg)
    134 else:
    135     # This item is completely unexpected.
    136     msg = (f'Error setting {name}: Items must be of type '
    137            f'"{expected_type.__name__}", but item at {ind_str} is '
    138            f'of type "{type(current_item).__name__}"')

TypeError: Error setting filter bins: Found an iterable at [0], items in that iterable exceed the maximum depth of 1

In [3]: openmc.ParticleFilter({"neutron", "photon"})
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Cell In[3], line 1
----> 1 openmc.ParticleFilter({"neutron", "photon"})

File ~/dev/pers-openmc/openmc/filter.py:114, in Filter.__init__(self, bins, filter_id)
    113 def __init__(self, bins, filter_id=None):
--> 114     self.bins = bins
    115     self.id = filter_id

File ~/dev/pers-openmc/openmc/filter.py:767, in ParticleFilter.bins(self, bins)
    764 @Filter.bins.setter
    765 def bins(self, bins):
    766     bins = np.atleast_1d(bins)
--> 767     cv.check_iterable_type('filter bins', bins, str)
    768     for edge in bins:
    769         cv.check_value('filter bin', edge, _PARTICLES)

File ~/dev/pers-openmc/openmc/checkvalue.py:132, in check_iterable_type(name, value, expected_type, min_depth, max_depth)
    128     if len(tree) > max_depth:
    129         msg = (f'Error setting {name}: Found an iterable at '
    130                f'{ind_str}, items in that iterable exceed the '
    131                f'maximum depth of {max_depth}')
--> 132         raise TypeError(msg)
    134 else:
    135     # This item is completely unexpected.
    136     msg = (f'Error setting {name}: Items must be of type '
    137            f'"{expected_type.__name__}", but item at {ind_str} is '
    138            f'of type "{type(current_item).__name__}"')

TypeError: Error setting filter bins: Found an iterable at [0], items in that iterable exceed the maximum depth of 1

Environment

Openmc: 0.14.1-dev