RFR: 8343925: [BACKOUT] JDK-8342650 Move getChars to DecimalDigits

[Jaikiran Pai]

On Mon, 11 Nov 2024 12:34:44 GMT, Shaojin Wen <swen at openjdk.org> wrote:

> 8343925 Feedback PR #21593 test/jdk/java/util/BitSet/HugeToString.java crash, 
> 
> I can't reproduce the problem on a MacBook M1 Max, but I agree that more testing is needed, so let's roll it back first.

I have verified that this backout matches a `git revert` of the commit that introduced the change in https://bugs.openjdk.org/browse/JDK-8342650. So on that front, this backout looks OK to me.
Alan has noted that Chen is running some tests with this backout. So please wait for that review, before integrating.

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Marked as reviewed by jpai (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/22012#pullrequestreview-2427380530