RFR: Merge openjdk/jdk21u-dev:master

[William Kemper]

Merges tag jdk-21.0.5+4

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Commit messages:
 - 8331572: Allow using OopMapCache outside of STW GC phases
 - 8330520: linux clang build fails in os_linux.cpp with static_assert with no message is a C++17 extension
 - 8310683: Refactor StandardCharset/standard.java to use JUnit
 - 8317738: CodeCacheFullCountTest failed with "VirtualMachineError: Out of space in CodeCache for method handle intrinsic"
 - 8325022: Incorrect error message on client authentication
 - 8331153: JFR: Improve logging of jdk/jfr/api/consumer/filestream/TestOrdered.java
 - 8321206: Make Locale related system properties `StaticProperty`
 - 8303920: Avoid calling out to python in DataDescriptorSignatureMissing test
 - 8319817: Charset constructor should make defensive copy of aliases
 - 8073061: (fs) Files.copy(foo, bar, REPLACE_EXISTING) deletes bar even if foo is not readable
 - ... and 7 more: https://git.openjdk.org/shenandoah-jdk21u/compare/75c82f63...ed77abd4

The merge commit only contains trivial merges, so no merge-specific webrevs have been generated.

Changes: https://git.openjdk.org/shenandoah-jdk21u/pull/74/files
  Stats: 2781 lines in 68 files changed: 2196 ins; 155 del; 430 mod
  Patch: https://git.openjdk.org/shenandoah-jdk21u/pull/74.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk21u.git pull/74/head:pull/74

PR: https://git.openjdk.org/shenandoah-jdk21u/pull/74