fix: relax timeout expectations

[shollyman]

Changes to python-api-core can in certain cases cause timeout to be represented as a literal python base object type. This CL adjusts logic that selects from multiple timeout values to better handle this case, which previously assumed either a None or scalar value being present.

Fixes: #1612

[chalmerlowe]

LGTM.

[idan3]

I got this error and after updating to google-cloud-bigquery==3.12.0 this error stopped but I get this instead:

 File "/usr/local/lib/python3.10/site-packages/google/api_core/future/polling.py", line 282, in exception
    self._blocking_poll(timeout=timeout)
  File "/usr/local/lib/python3.10/site-packages/google/cloud/bigquery/job/query.py", line 1318, in _blocking_poll
    super(QueryJob, self)._blocking_poll(timeout=timeout, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/google/api_core/future/polling.py", line 137, in _blocking_poll
    polling(self._done_or_raise)(retry=retry)
  File "/usr/local/lib/python3.10/site-packages/google/api_core/retry.py", line 366, in retry_wrapped_func
    return retry_target(
  File "/usr/local/lib/python3.10/site-packages/google/api_core/retry.py", line 204, in retry_target
    return target()
  File "/usr/local/lib/python3.10/site-packages/google/cloud/bigquery/job/query.py", line 1460, in _done_or_raise
    self.reload(retry=retry, timeout=transport_timeout)
  File "/usr/local/lib/python3.10/site-packages/google/cloud/bigquery/job/base.py", line 781, in reload
    api_response = client._call_api(
  File "/usr/local/lib/python3.10/site-packages/google/cloud/bigquery/client.py", line 816, in _call_api
    return call()
  File "/usr/local/lib/python3.10/site-packages/google/cloud/_http/__init__.py", line 482, in api_request
    response = self._make_request(
  File "/usr/local/lib/python3.10/site-packages/google/cloud/_http/__init__.py", line 341, in _make_request
    return self._do_request(
  File "/usr/local/lib/python3.10/site-packages/google/cloud/_http/__init__.py", line 379, in _do_request
    return self.http.request(
  File "/usr/local/lib/python3.10/site-packages/google/auth/transport/requests.py", line 542, in request
    response = super(AuthorizedSession, self).request(
  File "/usr/local/lib/python3.10/site-packages/requests/sessions.py", line 589, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python3.10/site-packages/requests/sessions.py", line 703, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/requests/adapters.py", line 483, in send
    timeout = TimeoutSauce(connect=timeout, read=timeout)
  File "/usr/local/lib/python3.10/site-packages/urllib3/util/timeout.py", line 102, in __init__
    self._connect = self._validate_timeout(connect, "connect")
  File "/usr/local/lib/python3.10/site-packages/urllib3/util/timeout.py", line 147, in _validate_timeout
    raise ValueError(
ValueError: Timeout value connect was <object object at 0x7c6b5e484a80>, but it must be an int, float or None.

Relevant libraries versions:

google-api-python-client==2.101.0
google-api-core==2.12.0
google-cloud-bigquery==3.12.0
requests==2.31.0
urllib3==1.26.18