fix: use object dtype for ARRAY columns in to_pandas() with pandas 1.x

[tswast]

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:

• Make sure to open an issue as a bug/issue before writing your code! That way we can discuss the change, evaluate designs, and agree on the general idea
• Ensure the tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)

Fixes internal issue 321013333
🦕

[tswast]

Doctest failed with

2631             >>> @bpd.remote_function([str], bool, reuse=False)
UNEXPECTED EXCEPTION: InternalServerError('Could not create Cloud Run service bigframes-597cc02ef5ce0525e4f51697b5a83b6c-32er4jqu. ')
Traceback (most recent call last):
  File "/tmpfs/src/github/python-bigquery-dataframes/.nox/doctest/lib/python3.11/site-packages/google/api_core/grpc_helpers.py", line 79, in error_remapped_callable
    return callable_(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmpfs/src/github/python-bigquery-dataframes/.nox/doctest/lib/python3.11/site-packages/grpc/_channel.py", line 1160, in __call__
    return _end_unary_response_blocking(state, call, False, None)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmpfs/src/github/python-bigquery-dataframes/.nox/doctest/lib/python3.11/site-packages/grpc/_channel.py", line 1003, in _end_unary_response_blocking
    raise _InactiveRpcError(state)  # pytype: disable=not-instantiable
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
grpc._channel._InactiveRpcError: <_InactiveRpcError of RPC that terminated with:
	status = StatusCode.INTERNAL
	details = "Could not create Cloud Run service bigframes-597cc02ef5ce0525e4f51697b5a83b6c-32er4jqu. "
	debug_error_string = "UNKNOWN:Error received from peer ipv4:74.125.126.95:443 {grpc_message:"Could not create Cloud Run service bigframes-597cc02ef5ce0525e4f51697b5a83b6c-32er4jqu. ", grpc_status:13, created_time:"2024-01-22T17:51:55.118019527+00:00"}"
>
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/doctest.py", line 1351, in __run
    exec(compile(example.source, filename, "single",
  File "<doctest series.Series.mask[7]>", line 1, in <module>
  File "/tmpfs/src/github/python-bigquery-dataframes/bigframes/functions/remote_function.py", line 851, in wrapper
    rf_name, cf_name = remote_function_client.provision_bq_remote_function(
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmpfs/src/github/python-bigquery-dataframes/bigframes/functions/remote_function.py", line 472, in provision_bq_remote_function
    cf_endpoint = self.create_cloud_function(
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmpfs/src/github/python-bigquery-dataframes/bigframes/functions/remote_function.py", line 415, in create_cloud_function
    operation = self._cloud_functions_client.create_function(
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmpfs/src/github/python-bigquery-dataframes/.nox/doctest/lib/python3.11/site-packages/google/cloud/functions_v2/services/function_service/client.py", line 1007, in create_function
    response = rpc(
               ^^^^
  File "/tmpfs/src/github/python-bigquery-dataframes/.nox/doctest/lib/python3.11/site-packages/google/api_core/gapic_v1/method.py", line 131, in __call__
    return wrapped_func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmpfs/src/github/python-bigquery-dataframes/.nox/doctest/lib/python3.11/site-packages/google/api_core/grpc_helpers.py", line 81, in error_remapped_callable
    raise exceptions.from_grpc_error(exc) from exc
google.api_core.exceptions.InternalServerError: 500 Could not create Cloud Run service bigframes-597cc02ef5ce0525e4f51697b5a83b6c-32er4jqu. 
/[tmpfs/src/github/python-bigquery-dataframes/third_party/bigframes_vendored/pandas/core/series.py:2631](https://cs.corp.google.com/piper///depot/google3/tmpfs/src/github/python-bigquery-dataframes/third_party/bigframes_vendored/pandas/core/series.py?l=2631): UnexpectedException
...
FAILED third_party/bigframes_vendored/pandas/core/frame.py::frame.DataFrame.map
FAILED third_party/bigframes_vendored/pandas/core/series.py::series.Series.apply
FAILED third_party/bigframes_vendored/pandas/core/series.py::series.Series.mask

As these are unrelated and remote_function is notoriously flaky, I'll override this check for now.