git: openjdk/jdk-sandbox: json: @see value() / JsonNull hash value

[duke]

Changeset: 7a4e0425
Branch: json
Author:    Naoto Sato <naoto.sato at oracle.com>
Date:      2025-04-09 10:52:14 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/7a4e04258d647337cf85e5cff46a566fad95eee8

@see value() / JsonNull hash value

! src/java.base/share/classes/java/util/json/JsonNullImpl.java
! src/java.base/share/classes/java/util/json/JsonString.java