git: openjdk/jdk-sandbox: json: add subtype tests for toNumber()

[duke]

Changeset: 4272159a
Branch: json
Author:    Justin Lu <justin.lu at oracle.com>
Date:      2025-03-18 14:07:47 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/4272159ac1cee5e12aed865cbbd80989d6a8d913

add subtype tests for toNumber()

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