Setting a column of a Modin DataFrame to Categorical twice does not work

[naren-ponder]

System information

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04): macOS Version 11.6
• Modin version (modin.__version__): 0.13.2
• Python version: Python 3.8.11
• Code we can use to reproduce:

import modin.pandas as pd
from modin.pandas import Categorical
 
d = {'a': [1, 2, 3], 'b': [4, 5, 6]} 
df = pd.DataFrame(data=d)
df['a'] = Categorical(df['a'], ordered=True)
df['a'] = Categorical(df['a'], ordered=True)

Describe the problem

AttributeError                            Traceback (most recent call last)
<ipython-input-2-a6c6c5c96a53> in <module>
      5 df = pd.DataFrame(data=d)
      6 df['a'] = Categorical(df['a'], ordered=True)
----> 7 df['a'] = Categorical(df['a'], ordered=True)

~/opt/anaconda3/envs/ponder/lib/python3.8/site-packages/pandas/core/arrays/categorical.py in __init__(self, values, categories, ordered, dtype, fastpath, copy)
    454             # error: Item "ExtensionArray" of "Union[Any, ExtensionArray]" has no
    455             # attribute "_codes"
--> 456             old_codes = extract_array(values)._codes  # type: ignore[union-attr]
    457             codes = recode_for_categories(
    458                 old_codes, values.dtype.categories, dtype.categories, copy=copy

~/Desktop/modin/modin/pandas/series.py in __getattr__(self, key)
    372             if key not in _ATTRS_NO_LOOKUP and key in self.index:
    373                 return self[key]
--> 374             raise e
    375 
    376     def __int__(self):

~/Desktop/modin/modin/pandas/series.py in __getattr__(self, key)
    368         """
    369         try:
--> 370             return object.__getattribute__(self, key)
    371         except AttributeError as e:
    372             if key not in _ATTRS_NO_LOOKUP and key in self.index:

AttributeError: 'Series' object has no attribute '_codes'

Source code / logs

[jbrockmendel]

In the extract_array call a pd.Series object gets extracted to a Categorical, while a modin.pandas.Series object does not. Similar to #4646