[jdk23u] RFR: 8335397: Improve reliability of TestRecursiveMonitorChurn.java

[Mimoun Ghordou]

Clean Backport

Tested open/test/hotspot/jtreg/runtime/locking/TestRecursiveMonitorChurn.java, works fine

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Commit messages:
 - 8335397: Improve reliability of TestRecursiveMonitorChurn.java

Changes: https://git.openjdk.org/jdk23u/pull/57/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk23u&pr=57&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8335397
  Stats: 77 lines in 5 files changed: 28 ins; 31 del; 18 mod
  Patch: https://git.openjdk.org/jdk23u/pull/57.diff
  Fetch: git fetch https://git.openjdk.org/jdk23u.git pull/57/head:pull/57

PR: https://git.openjdk.org/jdk23u/pull/57