RFR: 8361300: Document exceptions for Unsafe offset methods [v6]

[John R Rose]

On Thu, 31 Jul 2025 19:04:34 GMT, Chen Liang <liach at openjdk.org> wrote:

>> Unsafe throws IAE for misusing static vs instance fields, and it's revealed that AtomicXxxFieldUpdaters are using this mechanism to reject static fields. This is not a good practice, but we can at least document this so we don't accidentally introduce problems.
>
> Chen Liang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Less specific reasons for IAE

This works for me.

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Marked as reviewed by jrose (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/25945#pullrequestreview-3076625989