Cypress test ui-overlay is flaky

Yep, seeing this consistently too. But oddly, this was not happening on Friday. Since then, it seems to be failing consistently.

Any idea what changed?

RTBC'ing given @jessebaker's approval.

… oh and … just now it passed for the very first time today for me (out of >=10 CI runs): https://git.drupalcode.org/project/experience_builder/-/pipelines/540915 🤷‍♂️