RFR: 2321: Prefer pattern matching for instanceof

[Zhao Song]

On Mon, 8 Jul 2024 17:04:03 GMT, Pavel Rappo <prappo at openjdk.org> wrote:

> Pattern matching for `instanceof` was introduced in JDK 16, by JEP 394. It's already been used by new code in Skara, but the older code can benefit from it too.

Looks good!

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Marked as reviewed by zsong (Reviewer).

PR Review: https://git.openjdk.org/skara/pull/1673#pullrequestreview-2164434204