RFR: JDK-8317636: Improve heap walking API tests to verify correctness of field indexes [v2]

[Chris Plummer]

On Thu, 1 Feb 2024 01:38:21 GMT, Alex Menkov <amenkov at openjdk.org> wrote:

>> The fix adds new test for FollowReferences JVMTI function to verify correctness of reported field indexes.
>
> Alex Menkov has updated the pull request incrementally with one additional commit since the last revision:
> 
>   feedback

Marked as reviewed by cjplummer (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/17580#pullrequestreview-1855244184