[jdk21u-dev] RFR: 8365893: test/jdk/java/lang/Thread/virtual/JfrEvents.java failing intermittently [v6]

[SendaoYan]

> Hi all,
> 
> This pull request contains a backport of commit [58e75815](https://github.com/openjdk/jdk/commit/58e7581527208dfd6dd694793e4790dcad8fc3ef) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Alan Bateman on 24 Aug 2025 and was reviewed by Jaikiran Pai.
> 
> Thanks!

SendaoYan has updated the pull request incrementally with one additional commit since the last revision:

  Add --enable-preview to enable unnamed syntax

-------------

Changes:
  - all: https://git.openjdk.org/jdk21u-dev/pull/2122/files
  - new: https://git.openjdk.org/jdk21u-dev/pull/2122/files/4f26d045..218ba38a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2122&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2122&range=04-05

  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2122.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2122/head:pull/2122

PR: https://git.openjdk.org/jdk21u-dev/pull/2122