[jdk21u-dev] RFR: 8316959: Improve InlineCacheBuffer pending queue management

[Goetz Lindenmaier]

I backport this for parity with 21.0.4-oracle.

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Commit messages:
 - Backport c9985720b91cf6ad2938e9be12da08c5193f83af

Changes: https://git.openjdk.org/jdk21u-dev/pull/453/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=453&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316959
  Stats: 31 lines in 3 files changed: 17 ins; 0 del; 14 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/453.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/453/head:pull/453

PR: https://git.openjdk.org/jdk21u-dev/pull/453