RFR: 8357913: Add `@Stable` to BigInteger and BigDecimal [v2]

Wed Jun 4 14:06:52 UTC 2025

On Wed, 4 Jun 2025 13:53:09 GMT, Raffaello Giulietti <rgiulietti at openjdk.org> wrote:

>> BigInteger is an object that is considered immutable, but its field mag is actually changed. This is incredible and should be fixed here. It is easy to make mistakes.
>
> Please do _not_ fix the `mag` issue in this PR.
> I'll take care of it in a future PR.

I just filed [JDK-8358599](https://bugs.openjdk.org/browse/JDK-8358599).

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/25437#discussion_r2126690570