[lworld] RFR: Merge jdk

[David Simms]

Merge jdk-23+20

-------------

Commit messages:
 - Fixed JDK-8300148 merge
 - Merge fixes
 - Merge jdk-23+20
 - 8328703: Illegal accesses in Java_jdk_internal_org_jline_terminal_impl_jna_linux_CLibraryImpl_ioctl0
 - 8331097: Tests build is broken after pr/18914
 - 8329797: Shenandoah: Default case invoked for: "MaxL" (bad AD file)
 - 8325373: Improve StackCounter error reporting for bad switch cases
 - 8330815: Use pattern matching for instanceof in KeepAliveCache
 - 8331030: langtools/tools/javac/tree tests fail with SOE with fastdebug and -Xcomp
 - 8322135: Printing JTable in Windows L&F throws InternalError: HTHEME is null
 - ... and 98 more: https://git.openjdk.org/valhalla/compare/207ed66f...dc82be00

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - lworld: https://webrevs.openjdk.org/?repo=valhalla&pr=1247&range=00.0
 - jdk: https://webrevs.openjdk.org/?repo=valhalla&pr=1247&range=00.1

Changes: https://git.openjdk.org/valhalla/pull/1247/files
  Stats: 37944 lines in 515 files changed: 20506 ins; 15299 del; 2139 mod
  Patch: https://git.openjdk.org/valhalla/pull/1247.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1247/head:pull/1247

PR: https://git.openjdk.org/valhalla/pull/1247