RFR: 8373649: Convert simple AtomicAccess usage in ConcurrentHashTable to use Atomic<T>

[Kim Barrett]

Please review this conversion of simple AtomicAccess usage in
ConcurrentHashTable to use Atomic<T>.  This is split out from the complete
conversion to simplify reviewing and testing.

Testing: mach5 tier1-3

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Commit messages:
 - atomic claimer _next
 - atomic _resize_lock_owner
 - atomic _invisible_epoch
 - atomic _size_limit_reached

Changes: https://git.openjdk.org/jdk/pull/28816/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28816&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8373649
  Stats: 58 lines in 3 files changed: 3 ins; 0 del; 55 mod
  Patch: https://git.openjdk.org/jdk/pull/28816.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28816/head:pull/28816

PR: https://git.openjdk.org/jdk/pull/28816