[jdk21u-dev] RFR: 8324174: assert(m->is_entered(current)) failed: invariant

[Martin Doerr]

Clean backport of [JDK-8324174](https://bugs.openjdk.org/browse/JDK-8324174).

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Commit messages:
 - Backport 5b9b176c6729aeff2a70d304a1ef57da3965fb53

Changes: https://git.openjdk.org/jdk21u-dev/pull/699/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=699&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8324174
  Stats: 150 lines in 2 files changed: 148 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/699.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/699/head:pull/699

PR: https://git.openjdk.org/jdk21u-dev/pull/699