Replace `ThreadTracker` usage in `java.net.URL` with `ScopedValue` and add a test.
------------- Commit messages: - Replace `ThreadTracker` usage with `ScopedValue` in `java.net.URL` Changes: https://git.openjdk.org/jdk/pull/27623/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27623&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8366040 Stats: 84 lines in 3 files changed: 65 ins; 14 del; 5 mod Patch: https://git.openjdk.org/jdk/pull/27623.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27623/head:pull/27623 PR: https://git.openjdk.org/jdk/pull/27623
