Fix Napari relared tests fails

[adambasha0]

Problem:

• Deadlock which causes the test to hang during automated CI runs or during running tests using pytests in local env.
• Cause of the error is probably due to synchronization issues with GUI events when running in a headless environment.
• Using qtbot.wait(100), the test will wait first for GUI updates to complete. This will ensure that the viewer state is updated before assertions are made.

Fix:

• Refactored the test to use qtbot to synchronize GUI events.
• Removed the @pytest.mark.skipif condition for GITHUB_ACTIONS as the test should now run reliably in all environments.

[qin-yu]

Thank you @adambasha0! But your CI log shows that tests for widgets are skipped.

tests/widgets/test_widget_open_file.py s
tests/widgets/test_widget_preprocessing.py sssssss

[adambasha0]

Thank you @adambasha0! But your CI log shows that tests for widgets are skipped.

tests/widgets/test_widget_open_file.py s
tests/widgets/test_widget_preprocessing.py sssssss

Hi @qin-yu! Thank you, I did not notice this. I did run it manually, I do not know why it was skipped.

[qin-yu]

I saw you re-ran it but the output is the same.

[adambasha0]

I saw you re-ran it but the output is the same.

The CI is being run for modify-package-workflow-and-refactor-conda-environment (the other PR , the branch here is rebased to master branch)
I think it should be run for fix-Napari-related-tests-fail

[qin-yu]

Hi @adambasha0 are you still trying? If not I'll close this PR.