[jdk21u-dev] RFR: 8319773: Avoid inflating monitors when installing hash codes for LM_LIGHTWEIGHT

[Martin Doerr]

Clean backport of [JDK-8319773](https://bugs.openjdk.org/browse/JDK-8319773).

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Commit messages:
 - Backport 65a0672791f868556776fc435b37319ed69f7c84

Changes: https://git.openjdk.org/jdk21u-dev/pull/618/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=618&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8319773
  Stats: 76 lines in 4 files changed: 29 ins; 23 del; 24 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/618.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/618/head:pull/618

PR: https://git.openjdk.org/jdk21u-dev/pull/618