git: openjdk/jdk: master: 8359119: Change Charset to use StableValue

[Per Minborg]

Changeset: f364fcab
Branch: master
Author:    Per Minborg <pminborg at openjdk.org>
Date:      2025-08-18 05:32:03 +0000
URL:       https://git.openjdk.org/jdk/commit/f364fcab792ed5a14e5c2779fa85ecc9d6915ae3

8359119: Change Charset to use StableValue

Reviewed-by: alanb, rriggs

! src/java.base/share/classes/java/nio/charset/Charset.java