Open source tonga accessibility tests.
--------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - 8384940: Open source accessibility tests Changes: https://git.openjdk.org/jdk/pull/31196/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=31196&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8384940 Stats: 1246 lines in 6 files changed: 1246 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/31196.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/31196/head:pull/31196 PR: https://git.openjdk.org/jdk/pull/31196
