[jdk21u-dev] RFR: 8314515: java/util/concurrent/SynchronousQueue/Fairness.java failed with "Error: fair=false i=8 j=0"

[Elif Aslan]

Clean backport of fixing java/util/concurrent/SynchronousQueue/Fairness.java .

GHA Tested

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Commit messages:
 - Backport 35e9662767cc0a1dea9b5afa2a6d61a85297253c

Changes: https://git.openjdk.org/jdk21u-dev/pull/745/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=745&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314515
  Stats: 35 lines in 1 file changed: 28 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/745.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/745/head:pull/745

PR: https://git.openjdk.org/jdk21u-dev/pull/745