[SPARK-36779][PYTHON] Fix when list of data type tuples has len = 1

[dgd-contributor]

What changes were proposed in this pull request?

Fix when list of data type tuples has len = 1

Why are the changes needed?

Fix when list of data type tuples has len = 1

>>> ps.DataFrame[("a", int), [int]]
typing.Tuple[pyspark.pandas.typedef.typehints.IndexNameType, int]

>>> ps.DataFrame[("a", int), [("b", int)]]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/dgd/spark/python/pyspark/pandas/frame.py", line 11998, in __class_getitem__
    return create_tuple_for_frame_type(params)
  File "/Users/dgd/spark/python/pyspark/pandas/typedef/typehints.py", line 685, in create_tuple_for_frame_type
    return Tuple[extract_types(params)]
  File "/Users/dgd/spark/python/pyspark/pandas/typedef/typehints.py", line 755, in extract_types
    return (index_type,) + extract_types(data_types)
  File "/Users/dgd/spark/python/pyspark/pandas/typedef/typehints.py", line 770, in extract_types
    raise TypeError(
TypeError: Type hints should be specified as one of:
  - DataFrame[type, type, ...]
  - DataFrame[name: type, name: type, ...]
  - DataFrame[dtypes instance]
  - DataFrame[zip(names, types)]
  - DataFrame[index_type, [type, ...]]
  - DataFrame[(index_name, index_type), [(name, type), ...]]
  - DataFrame[dtype instance, dtypes instance]
  - DataFrame[(index_name, index_type), zip(names, types)]
However, got [('b', <class 'int'>)].

Does this PR introduce any user-facing change?

After:

>>> ps.DataFrame[("a", int), [("b", int)]]
typing.Tuple[pyspark.pandas.typedef.typehints.IndexNameType, pyspark.pandas.typedef.typehints.NameType]

How was this patch tested?

exist test

[AmplabJenkins]

Can one of the admins verify this patch?

[dgd-contributor]

@HyukjinKwon could you take a look?

[HyukjinKwon]

Oh, thanks!

[HyukjinKwon]

Merged to master.