[Bug 56185] The GitLab Windows test job runs even when not needed

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=56185

--- Comment #4 from François Gouget  ---
Sure there's no reason for build-linux and build-mac to be dynamic jobs. The
test-linux-32 job always runs all the tests anyway so it does not need to be
dynamic either. Same for test-linux-64 since it always runs a single test:
dinput. The same would likely be true for any platform that runs the tests in
Wine: so many parts of Wine can impact the test that they are likely to always
run tests.

So the Windows tests are really the only ones where it makes sense to use a
child pipeline.
> I think Gitlab child pipelines are confusing, and makes it difficult to
> figure what job has failed

It's actually really not that hard.