Integrated: 8354452: Shenandoah: Enforce range checks on parameters controlling heuristic sleep times

[William Kemper]

Clean backport.

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Commit messages:
 - Backport e8bcedb09b0e5eeb77bf1dc3a87bb61d7a5e8404

Changes: https://git.openjdk.org/shenandoah-jdk21u/pull/187/files
  Webrev: https://webrevs.openjdk.org/?repo=shenandoah-jdk21u&pr=187&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8354452
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/shenandoah-jdk21u/pull/187.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk21u.git pull/187/head:pull/187

PR: https://git.openjdk.org/shenandoah-jdk21u/pull/187