RFR: 8303916: ThreadLists.java inconsistent results

[Kevin Walls]

Clean backport from latest jdk repo to jdk21 for the test change:
8303916: ThreadLists.java inconsistent results

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Commit messages:
 - Backport 8c9b85a990d955487f9141207cc83d0051defc57

Changes: https://git.openjdk.org/jdk21/pull/24/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21&pr=24&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8303916
  Stats: 77 lines in 1 file changed: 54 ins; 1 del; 22 mod
  Patch: https://git.openjdk.org/jdk21/pull/24.diff
  Fetch: git fetch https://git.openjdk.org/jdk21.git pull/24/head:pull/24

PR: https://git.openjdk.org/jdk21/pull/24