[jdk22] RFR: 8323631: JfrTypeSet::write_klass can enqueue a CLD klass that is unloading

[Markus Grönlund]

8323631: JfrTypeSet::write_klass can enqueue a CLD klass that is unloading

-------------

Commit messages:
 - Backport e2d6023cb9667dc9911e0af421d6dd0c78f6bf58

Changes: https://git.openjdk.org/jdk22/pull/81/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk22&pr=81&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8323631
  Stats: 58 lines in 1 file changed: 32 ins; 26 del; 0 mod
  Patch: https://git.openjdk.org/jdk22/pull/81.diff
  Fetch: git fetch https://git.openjdk.org/jdk22.git pull/81/head:pull/81

PR: https://git.openjdk.org/jdk22/pull/81