report unit tests as failed overall when any test fails

[BenTheElder]

This should not be "passing" given it has 68 failing test cases:

https://prow.k8s.io/view/gs/kubernetes-ci-logs/logs/ci-kubernetes-unit-windows-master/1876270253122523136

The exit status of the unit tests should be preserved and reflected as the overall job pass/fail.

The script in scripts/ci-k8s-unit-test.sh doesn't seem to handle this?

Also, this is taking way longer than unit tests on linux, I think we're not giving the tests enough resources to finish reasonably quickly, that seems like something we could easily throw a few more cores at?

[BenTheElder]

related (though not to the title yet)

• Updating Windows unit tests job to run on an 8 core machine kubernetes/test-infra#34279
• bump golang version to v1.23.6 for unit tests #479