RFR: Merge openjdk/jdk21u:master

[William Kemper]

Merges tag jdk-21.0.9+1

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Commit messages:
 - 8341311: [Accessibility,macOS,VoiceOver] VoiceOver announces incorrect number of items in submenu of JPopupMenu
 - 8332857: Test vmTestbase/nsk/jvmti/GetThreadCpuTime/thrcputime002/TestDescription.java failed
 - 8350858: [IR Framework] Some tests failed on Cascade Lake
 - 8350964: Add an ArtifactResolver.fetch(clazz) method
 - 8347564: ZGC: Crash in DependencyContext::clean_unloading_dependents
 - 8309238: jdk/jfr/tool/TestView.java failed with "exitValue = 134"
 - 8361959: [GCC static analyzer] java_props_md.c  leak of 'temp'  variable is reported
 - 8361198: [AIX] fix misleading error output in thread_cpu_time_unchecked
 - 8304674: File java.c compile error with -fsanitize=address -O0
 - 8327748: Convert javax/swing/JFileChooser/6798062/bug6798062.java applet test to main
 - ... and 171 more: https://git.openjdk.org/shenandoah-jdk21u/compare/54f20959...e57fbd42

The webrev contains the conflicts with master:
 - merge conflicts: https://webrevs.openjdk.org/?repo=shenandoah-jdk21u&pr=208&range=00.conflicts

Changes: https://git.openjdk.org/shenandoah-jdk21u/pull/208/files
  Stats: 27590 lines in 639 files changed: 15985 ins; 8402 del; 3203 mod
  Patch: https://git.openjdk.org/shenandoah-jdk21u/pull/208.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk21u.git pull/208/head:pull/208

PR: https://git.openjdk.org/shenandoah-jdk21u/pull/208