git: openjdk/jdk-sandbox: json: Value based lowered from normative to impl specific. Restore some explicit value based wording

[duke]

Changeset: 8291b712
Branch: json
Author:    Justin Lu <justin.lu at oracle.com>
Date:      2025-05-12 15:13:15 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/8291b71219d479a7774fb25640d38ace5a3506ea

Value based lowered from normative to impl specific. Restore some explicit value based wording

! src/java.base/share/classes/java/util/json/JsonValue.java