Updated processtools to check exception after join(). Tested with running CI virtual thread tests.
------------- Commit messages: - 8307486: ProcessTools.java should wait until vthread is completed before checking exceptions Changes: https://git.openjdk.org/jdk/pull/13873/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13873&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8307486 Stats: 4 lines in 1 file changed: 1 ins; 1 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/13873.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/13873/head:pull/13873 PR: https://git.openjdk.org/jdk/pull/13873
