[jdk21u-dev] RFR: 8357285: JSR166 Test case testShutdownNow_delayedTasks failed

[Goetz Lindenmaier]

I backport this for parity with 21.0.9-oracle

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Commit messages:
 - Backport 6a07820483bcf3e9d7df27ee496db43675f1c002

Changes: https://git.openjdk.org/jdk21u-dev/pull/2084/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2084&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8357285
  Stats: 5 lines in 1 file changed: 2 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2084.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2084/head:pull/2084

PR: https://git.openjdk.org/jdk21u-dev/pull/2084