[jdk23] RFR: 8333931: Problemlist serviceability/jvmti/vthread/CarrierThreadEventNotification

[Serguei Spitsyn]

Please, review a jdk23 backport of the:
  [8333931](https://bugs.openjdk.org/browse/JDK-8333931): Problemlist serviceability/jvmti/vthread/CarrierThreadEventNotification
 
Thanks

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Commit messages:
 - Backport fe9c63cf73db7833646345e362cbda020ac403d1

Changes: https://git.openjdk.org/jdk/pull/19651/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19651&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8333931
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/19651.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19651/head:pull/19651

PR: https://git.openjdk.org/jdk/pull/19651