RFR: 8345876: Update nativeAddAtIndex comment to match the code [v2]

[Alexander Zvegintsev]

On Wed, 11 Dec 2024 09:13:06 GMT, Saagar Jha <duke at openjdk.org> wrote:

>> 8345876: Update nativeAddAtIndex comment to match the code
>
> Saagar Jha has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains one commit:
> 
>   Update nativeAddAtIndex comment to match the code

Marked as reviewed by azvegint (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/22627#pullrequestreview-2495794430