importing google.cloud.logging causes untyped modules in the namespace to be considered missing

Bug Report

To Reproduce

with the mypy config:

[mypy]

[mypy-google.cloud.*]
ignore_missing_imports=true

and the .py file:

from google.cloud import bigquery
from google.cloud import logging

Actual Behavior

I get

foo.py:1: error: Module "google.cloud" has no attribute "bigquery"

however if I comment out:

from google.cloud import bigquery
# from google.cloud import logging

I get

Success: no issues found in 1 source file

Expected Behavior

I don't expect importing a module in a namespace with stubs to affect other modules in that namespace

(Write what happened.)

Your Environment

• Mypy version used: 0.812 and d326952f88214b36d302c7fcbc92320b3c68fa18
• Mypy command-line flags: mypy.
• Mypy configuration options from mypy.ini (and other config files): see above
• Python version used: Python 3.8.5 (default, Jan 27 2021, 15:41:15)
• Operating system and version: Ubuntu 20.04.2 LTS

Start with the reported mypy configuration and the foo.py imports that reproduce the error, then inspect how mypy handles google.cloud namespace imports when ignore_missing_imports is enabled. Run mypy on the reproducer with and without the google.cloud.logging import. Done means importing google.cloud.logging no longer causes google.cloud.bigquery to be reported as missing.