Update all sites to use the SequentialScheduler::lockingScheduler factory method, and hide the constructor and related classes.
This is a cleanup PR, no new tests were added. Existing tier1-2 tests continue to pass. --------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - Update copyright - Update copyrights - Move to lockingScheduler - Move to lockingScheduler - Move to lockingScheduler Changes: https://git.openjdk.org/jdk/pull/32102/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=32102&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8389395 Stats: 138 lines in 9 files changed: 22 ins; 75 del; 41 mod Patch: https://git.openjdk.org/jdk/pull/32102.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/32102/head:pull/32102 PR: https://git.openjdk.org/jdk/pull/32102
