Nightly Dotty workflow of 2025-03-15 failed

[github-actions]

See https://github.com/scala/scala3/actions/runs/13868893141

[odersky]

We should remove the flaky test in CommunityBuildB

[hamzaremmal]

main is failing for a different reason... I've just wrapped up the PLDI submission, I will take a look at this and submit a patch by the end of the day