[jdk21u-dev] RFR: 8305567: serviceability/tmtools/jstat/GcTest01.java failed utils.JstatGcResults.assertConsistency

[Goetz Lindenmaier]

I backport this for parity with 21.0.10-oracle.

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Commit messages:
 - Backport 310ef85667bdba3f984cb6327aee71cfaf91458b

Changes: https://git.openjdk.org/jdk21u-dev/pull/2238/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2238&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8305567
  Stats: 101 lines in 10 files changed: 60 ins; 12 del; 29 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2238.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2238/head:pull/2238

PR: https://git.openjdk.org/jdk21u-dev/pull/2238