RFR: 8374681: ZGC: Convert zJNICritical to use Atomic<T> [v2]

[Axel Boldt-Christmas]

> Convert usages of AtomicAccess to Atomic<T> in zJNICritical.
> 
> Testing:
>  * GHA
>  * HotSpot GC tests with ZGC linux x64 and linux aarch64

Axel Boldt-Christmas has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Use compare_set
 - Merge remote-tracking branch 'upstream_jdk/master' into JDK-8374681
 - ZGC: Convert zJNICritical to use Atomic<T>

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/29223/files
  - new: https://git.openjdk.org/jdk/pull/29223/files/d50ca0dd..18166661

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29223&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29223&range=00-01

  Stats: 37961 lines in 637 files changed: 23743 ins; 8857 del; 5361 mod
  Patch: https://git.openjdk.org/jdk/pull/29223.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29223/head:pull/29223

PR: https://git.openjdk.org/jdk/pull/29223