git: openjdk/jdk-sandbox: json: true/false revert in test

[duke]

Changeset: 0dce717c
Branch: json
Author:    Naoto Sato <naoto.sato at oracle.com>
Date:      2025-05-16 14:30:42 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/0dce717c237d5a62ea0413e65329f045860ab8ee

true/false revert in test

! test/jdk/java/util/json/TestFormat.java