Added value class variants for NegativeArraySizeException tests, migrated types (Integer) and custom value classes (Point) with @enablePreview.
- [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - 8384109: Compact value class tests into single file - 8384109: Add custom value class NegativeArraySizeException test - 8384109: Update NegativeArraySizeExceptionTest to check arrays of value classes Changes: https://git.openjdk.org/valhalla/pull/2422/files Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=2422&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8384109 Stats: 94 lines in 1 file changed: 94 ins; 0 del; 0 mod Patch: https://git.openjdk.org/valhalla/pull/2422.diff Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2422/head:pull/2422 PR: https://git.openjdk.org/valhalla/pull/2422
