RFR: 8364649: G1: Move collection set related full gc reset code into abandon_collection_set() method [v2]

[Thomas Schatzl]

> 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

Thomas Schatzl has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/26624/files
  - new: https://git.openjdk.org/jdk/pull/26624/files/e8250d3d..e8250d3d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26624&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26624&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/26624.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26624/head:pull/26624

PR: https://git.openjdk.org/jdk/pull/26624