RFR: 8323005: Parallel: Refactor PSPromotionManager::claim_or_forward_depth [v2]

[Albert Mingkun Yang]

> Simple refactoring to inline certain checks to the callee.
> 
> Test: use card_scan.java from https://bugs.openjdk.org/browse/JDK-8310031 to stress young-gc and pause time stays the same.

Albert Mingkun Yang has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains one commit:

  pgc-push-depth

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Changes: https://git.openjdk.org/jdk/pull/17267/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17267&range=01
  Stats: 13 lines in 2 files changed: 3 ins; 5 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/17267.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17267/head:pull/17267

PR: https://git.openjdk.org/jdk/pull/17267