Unquarantine a spec

Context

See #455260 (comment 1944434456):

Test was supposedly fixed in !149097 (merged), BUT the test was fast-quarantined 1 hour before the fix was merged, so it's probable that the test was actually never run in the fix MR.

I'll quarantine the spec again, remove it from fast-quarantine and unquarantine the test.

What does this MR do and why?

Follow-up of !155975 (merged).

We're unquarantining this test, and ensuring that it passed in this MR.

Was the spec run in this MR?

TBD

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.