Research for CI SPM check hangs randomly on Xcode 16.1-3

[maratal]

Research for #295

Despite the fact that the first attempt was successful, the second one hanged with Xcode 16.2

This PR has a single dummy change after 4a93bad commit

Also tried with a860449 commit, still hanged with Xcode 16.2

Locally 200 iterations run just fine:

◇ Iteration 200 ended after 0.463 seconds.
✔ Test run with 26400 tests passed after 86.009 seconds.

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[maratal]

WDYT @lawrence-forooghian

[lawrence-forooghian]

We need to figure out which tests are hanging and whether it's consistently the same tests that are hanging; at least then we can disable those tests for now to unblock ourselves. Unfortunately the output of swift test doesn't show when a test completes, which makes this hard. So either we need to:

1. figure out some way of getting it to log when a test completes (Googled it, found nothing; asked ChatGPT and it invented some nonsense)
2. otherwise, maybe we could try adding a time limit to all of our tests (e.g. write @Suite(.timeLimit(.minutes(2))) in all of our tests files; AFAIK there isn't a way to set a time limit globally?), and then hanging tests will trigger a timeout

[lawrence-forooghian]

Asked about logging of test case completion in https://forums.swift.org/t/how-to-get-swift-test-to-log-when-a-test-case-completes/80524 by the way; would suggest trying with a time limit in the meantime @maratal

[lawrence-forooghian]

Asked about logging of test case completion in https://forums.swift.org/t/how-to-get-swift-test-to-log-when-a-test-case-completes/80524 by the way; would suggest trying with a time limit in the meantime @maratal

They replied there; apparently you can do swift test --verbose and it'll tell you when tests complete.

[maratal]

Tmp fix - #299

[lawrence-forooghian]

Closing this one in favour of #456