RFR: 8364781: Re-examine DigitList digits resizing during parsing [v2]

[Chen Liang]

On Fri, 8 Aug 2025 23:25:50 GMT, Justin Lu <jlu at openjdk.org> wrote:

>> This PR changes the DigitList resizing from adding increments of 100 to a doubling resizing approach. This helps with performance of larger String values during `DecimalFormat` parsing. See the comment on the associated JBS issue for further detail.
>
> Justin Lu has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Chen review - replace with ArraysSupport

Looks right.

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Marked as reviewed by liach (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/26705#pullrequestreview-3102311416