wpt-firefox-nightly-stability bot always fails for accessibility API tests (aamtest) #63580

When the aamtest are run on firefox, the stability bot consistently runs into the same issue, failing 1/10 times:

ERROR test_atspi - setup error: Exception: Couldn't find browser firefox in accessibility API ATSPI.

This failure means the browser might not have accessibility turn on, or that turning on accessibility is extremely slow. There is a firefox issue for this.

But is there a way we can prevent this from blocking additional tests/new PRs that add tests with the type aamtest? Maybe even make the stability tests non-blocking? Or is there a way to make them non-blocking just for tests in specific directories.....? It's happen on every PR that introduces new aamtest and since it's opened up a new area of testing, I'm hoping to see a lot more PRs.