RFR: 8284507: GHA: Only check test results if testing was not skipped

[Magnus Ihse Bursie]

On Thu, 7 Apr 2022 07:53:38 GMT, Christoph Langer <clanger at openjdk.org> wrote:

> In GitHub Actions the step "Check that all tests executed successfully" will be marked as failing when the "Run tests" step did not run but some earlier step already failed. This is irritating and it can be corrected by doing the test check only if testing was not skipped.
> 
> Here is a link to such a test run where the check failed although the issue was with the cygwin installation: https://github.com/GoeLin/jdk11u-dev/runs/5788778433?check_suite_focus=true

Marked as reviewed by ihse (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/8139