RFR: 8362271: G1: Improve G1CollectorState::clearing_bitmap name

[Thomas Schatzl]

On Tue, 15 Jul 2025 20:05:00 GMT, Sangheon Kim <sangheki at openjdk.org> wrote:

>> Hi all,
>> 
>>   can I have reviews for this trivial rename of the `clearing_bitmap` member in `G1CollectorState` to align it with the other related ones that read `<something>_in_progress`?
>> 
>> Testing: local compilation, gha
>> 
>> Thanks,
>>   Thomas
>
> Looks good and trivial.

Thanks @sangheon for your review

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PR Comment: https://git.openjdk.org/jdk/pull/26330#issuecomment-3077180010