Encoding a pandas.NaT object results in an error:

bindings/python/test/test_pandas.py:114: in round_trip
    res = write(self.coll, data)
bindings/python/pymongoarrow/api.py:394: in write
    enc_tab = RawBSONDocument(encode(next(tabular_gen), codec_options=codec_options))
../../work/pycharm/mongo-arrow/lib/python3.10/site-packages/bson/__init__.py:1021: in encode
    return _dict_to_bson(document, check_keys, codec_options)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
 
>   ???
E   ValueError: NaTType does not support utcoffset

bindings/python/test/test_arrow.py:205: in round_trip
    res = write(self.coll, data)
bindings/python/pymongoarrow/api.py:394: in write
    type_registry = TypeRegistry([_PandasNAEncoder(), _PandasNaTEncoder()], fallback_encoder=_fallback_encoder)
../../work/pycharm/mongo-arrow/lib/python3.10/site-packages/bson/codec_options.py:162: in __init__
    self._validate_type_encoder(codec)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = TypeRegistry(type_codecs=[<pymongoarrow.api._PandasNAEncoder object at 0x1354fbc40>, <pymongoarrow.api._PandasNaTEncoder object at 0x1354fa770>], fallback_encoder=<function _fallback_encoder at 0x134d70a60>)
codec = <pymongoarrow.api._PandasNaTEncoder object at 0x1354fa770>

    def _validate_type_encoder(self, codec: _Codec) -> None:
        from bson import _BUILT_IN_TYPES
    
        for pytype in _BUILT_IN_TYPES:
            if issubclass(cast(TypeCodec, codec).python_type, pytype):
                err_msg = (
                    "TypeEncoders cannot change how built-in types are "
                    "encoded (encoder %s transforms type %s)" % (codec, pytype)
                )
>               raise TypeError(err_msg)
E               TypeError: TypeEncoders cannot change how built-in types are encoded (encoder <pymongoarrow.api._PandasNaTEncoder object at 0x1354fa770> transforms type <class 'datetime.datetime'>)