RFR: 8358094: Test vmTestbase/nsk/jvmti/AttachOnDemand/attach045/TestDescription.java still times out after JDK-8357282

Sat Jun 7 01:16:44 UTC 2025

The test intermittently times out due to deadlock between 2 monitors: one monitor is JVMTI raw monitor used by agents, another is in Java (`nsk_jvmti_aod_disableEventAndFinish` does upcall) See JBS issue for details.
The fix updates agents to exit raw monitors before upcall.

Testing: no failures in 1000 runs

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Commit messages:
 - fix

Changes: https://git.openjdk.org/jdk/pull/25684/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25684&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8358094
  Stats: 24 lines in 5 files changed: 4 ins; 4 del; 16 mod
  Patch: https://git.openjdk.org/jdk/pull/25684.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25684/head:pull/25684

PR: https://git.openjdk.org/jdk/pull/25684