[jdk21u-dev] RFR: 8346175: juc cannot be waked up when using virtual thread

[Jiawei Tang]

The failed rate of the test I add was 21/100 before. 

Besides, all jtreg testcases in `test/jdk/java/lang/Thread/`&`test/jdk/java/util/concurrent/` has passed.

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Commit messages:
 - 8346175: juc cannot be waked up when using virtual thread

Changes: https://git.openjdk.org/jdk21u-dev/pull/1455/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1455&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8346175
  Stats: 146 lines in 3 files changed: 146 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1455.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1455/head:pull/1455

PR: https://git.openjdk.org/jdk21u-dev/pull/1455