RFR: 8370807: G1: Improve region attribute table method naming [v5]

[Albert Mingkun Yang]

On Wed, 29 Oct 2025 15:38:53 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

>> Hi all,
>> 
>>   please review this cleanup of the region attribute registration methods.
>> 
>> Testing: gha
>> 
>> Thanks,
>>   Thomas
>
> Thomas Schatzl has updated the pull request incrementally with one additional commit since the last revision:
> 
>   * add more verification before changing the attribute table

Marked as reviewed by ayang (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/28038#pullrequestreview-3395776756