[jdk11u-dev] RFR: 8291444: GHA builds/tests won't run manually if disabled from automatic running

[Christoph Langer]

Hi all,

This pull request contains a backport of [JDK-8291444](https://bugs.openjdk.org/browse/JDK-8291444), commit [17744caa](https://github.com/openjdk/jdk17u-dev/commit/17744caa87ac313e924deb92af37c491cf7c97bc) from the [openjdk/jdk17u-dev](https://git.openjdk.org/jdk17u-dev) repository.

Thanks!

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Commit messages:
 - Backport 17744caa87ac313e924deb92af37c491cf7c97bc

Changes: https://git.openjdk.org/jdk11u-dev/pull/2024/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2024&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8291444
  Stats: 14 lines in 1 file changed: 4 ins; 6 del; 4 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2024.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2024/head:pull/2024

PR: https://git.openjdk.org/jdk11u-dev/pull/2024