[lworld] RFR: Merge jdk

[David Simms]

Merge tag 'jdk-23+21' into lworld_merge_jdk_23_21
Added tag jdk-23+21 for changeset e833bfc8

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Commit messages:
 - Merge tag 'jdk-23+21' into lworld_merge_jdk_23_21
 - 8331222: Malformed text in the jpackage doc page
 - 8331427: Rename confusingly named ArraysSupport.signedHashCode
 - 8331212: Error recovery for broken switch expressions could be improved
 - 8331142: Add test for number of loader threads in BasicDirectoryModel
 - 8330969: scalability issue with loaded JVMTI agent
 - 8331393: AArch64: u32 _partial_subtype_ctr loaded/stored as 64
 - 8318682: SA decoding of scalar replaced objects is broken
 - 8331207: Misleading example in DateFormat#parse docs
 - 8329223: Parallel: Parallel GC resizes heap even if -Xms = -Xmx
 - ... and 59 more: https://git.openjdk.org/valhalla/compare/318e39a3...89786607

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - lworld: https://webrevs.openjdk.org/?repo=valhalla&pr=1249&range=00.0
 - jdk: https://webrevs.openjdk.org/?repo=valhalla&pr=1249&range=00.1

Changes: https://git.openjdk.org/valhalla/pull/1249/files
  Stats: 15146 lines in 1354 files changed: 4412 ins; 7219 del; 3515 mod
  Patch: https://git.openjdk.org/valhalla/pull/1249.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1249/head:pull/1249

PR: https://git.openjdk.org/valhalla/pull/1249