RFR: 8364722: Parallel: Move CLDG mark clearing to the end of full GC

[Thomas Schatzl]

On Tue, 5 Aug 2025 10:13:53 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Move ClassLoaderDataGraph claim-mark clearing to `post_compact` (the end of full-gc), to be more aligned with other GCs.
> 
> Test: tier1-3

Marked as reviewed by tschatzl (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/26637#pullrequestreview-3087675563