RFR: Merge openjdk/jdk:master

[William Kemper]

Merges tag jdk-23+20

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

Commit messages:
 - 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
 - 8331018: Clean up non-standard use of /** comments in `jdk.jshell`
 - 8330853: Add missing checks for ConnectionGraph::can_reduce_cmp() call
 - 8330611: AES-CTR vector intrinsic may read out of bounds (x86_64, AVX-512)
 - ... and 190 more: https://git.openjdk.org/shenandoah/compare/b04b3047...87e864bf

The webrev contains the conflicts with master:
 - merge conflicts: https://webrevs.openjdk.org/?repo=shenandoah&pr=426&range=00.conflicts

Changes: https://git.openjdk.org/shenandoah/pull/426/files
  Stats: 64203 lines in 955 files changed: 31624 ins; 27372 del; 5207 mod
  Patch: https://git.openjdk.org/shenandoah/pull/426.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah.git pull/426/head:pull/426

PR: https://git.openjdk.org/shenandoah/pull/426