RFR: 8364649: G1: Move collection set related full gc reset code into abandon_collection_set() method

[Thomas Schatzl]

On Mon, 4 Aug 2025 15:48:13 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   please review this change that removes all collection set related "abandoning" for full collection into `G1CollectedHeap::abandon_collection_set()`. Otherwise, when needing to search all over the place for the components, it's harder to verify if everything is actually properly handled.
> 
> Testing: gha
> 
> Thanks,
>   Thomas

Could not reproduce the failure GHA experienced. Seems to be related to recent outage.

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PR Comment: https://git.openjdk.org/jdk/pull/26624#issuecomment-3158384770