RFR: 8369038: Use NMethodMarkingScope and ThreadsClaimTokenScope in psParallelCompact

[Francesco Andreuzzi]

Replace `StrongRootsScope` with `ThreadsClaimTokenScope` in `MarkFromRootsTask ` to be more precise with what is needed and why.

- `MarkFromRootsTask` uses `MarkingNMethodClosure` (in `PCAddThreadRootsMarkingTaskClosure`), so we also need `NMethodMarkingScope`.
- `active_workers ` is guaranteed to be `> 0`

Passes tier1 and tier2 (fastdebug).

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Commit messages:
 - replace

Changes: https://git.openjdk.org/jdk/pull/27607/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27607&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8369038
  Stats: 6 lines in 1 file changed: 3 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/27607.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27607/head:pull/27607

PR: https://git.openjdk.org/jdk/pull/27607