Flaky UI Test fix 2

[coverbeck]

Description
Steve pointed this out when he was running into flaky tests. Looking at videos of the failures, it looks like the previous dialog had not finished closing before proceeding, which threw off the tests. Fix has worked for me a few times.

Review Instructions
Not really reviewable; tests should pass.

Issue
None

Security
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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[coverbeck]

Tests are failing. I haven't had a chance to look. I think they're failing somewhere unrelated to my fix. If the issue comes up again that @svonworl identified, I'd suggest cherry-picking this or investigating further.