git: openjdk/leyden: computed-constants: Use Unsafe

[duke]

Changeset: b23f80b7
Author:    Per Minborg <pminborg at gmail.com>
Date:      2023-08-02 09:51:23 +0000
URL:       https://git.openjdk.org/leyden/commit/b23f80b749bda72b772af79fc0f8da60f6c74f62

Use Unsafe

! src/java.base/share/classes/jdk/internal/constant/AbstractComputedConstant.java
! src/java.base/share/classes/jdk/internal/constant/OnDemandComputedConstantList.java