jmx-dev [jdk23] RFR: 8335124: com/sun/management/ThreadMXBean/ThreadCpuTimeArray.java failed with CPU time out of expected range

[Kevin Walls]

Clean backport to jdk23 of a simple test update, to try and avoid spurious failures.

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Commit messages:
 - Backport 79a3554e1da604627b3a010dc269c1bd914c79d3

Changes: https://git.openjdk.org/jdk/pull/19999/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19999&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8335124
  Stats: 3 lines in 1 file changed: 2 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/19999.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19999/head:pull/19999

PR: https://git.openjdk.org/jdk/pull/19999