[lilliput-jdk17u:lilliput] RFR: 8319773: Avoid inflating monitors when installing hash codes for LM_LIGHTWEIGHT

[Roman Kennke]

Backports https://github.com/openjdk/jdk/commit/65a0672791f868556776fc435b37319ed69f7c84

This is a useful enhancement that can avoid inflating monitors when installing i-hash-codes.

Backport has not been clean, but only context diffs.

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Commit messages:
 - 8319773: Avoid inflating monitors when installing hash codes for LM_LIGHTWEIGHT

Changes: https://git.openjdk.org/lilliput-jdk17u/pull/80/files
  Webrev: https://webrevs.openjdk.org/?repo=lilliput-jdk17u&pr=80&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/lilliput-jdk17u/pull/80.diff
  Fetch: git fetch https://git.openjdk.org/lilliput-jdk17u.git pull/80/head:pull/80

PR: https://git.openjdk.org/lilliput-jdk17u/pull/80