RFR: 8356255: Add Stable Field Updaters to allow efficient lazy field evaluations

[Per Minborg]

On Tue, 6 May 2025 10:55:22 GMT, Chen Liang <liach at openjdk.org> wrote:

>> Do you mean for interacting with the field or computing the hash?
>
> Calling the method that computes hash.

This would require another implementation to be written. Maybe we can add that later?

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PR Review Comment: https://git.openjdk.org/jdk/pull/25040#discussion_r2075271947