Please review this test-only change to account for all jtreg-based frames in `StackWalkTest.java`
The change replaces a set of explicit class names with a package name-based logic to filter out stackframe elements originating from jtreg. --------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - Make stacktrace assumptions more robust Changes: https://git.openjdk.org/jdk/pull/31144/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=31144&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8384505 Stats: 12 lines in 1 file changed: 8 ins; 3 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/31144.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/31144/head:pull/31144 PR: https://git.openjdk.org/jdk/pull/31144
