[jdk26] RFR: 8371502: serviceability/jvmti/vthread/ThreadListStackTracesTest/ThreadListStackTracesTest.java failing

[Serguei Spitsyn]

Please, review a jdk 26 test fix backport. This pull request contains a clean backport of changeset https://github.com/openjdk/jdk/commit/c46bed7292aad21b8cf9defcccac43c010a1f116 from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
This changeset was reviewed by [Leonid Mesnik](https://openjdk.org/census#lmesnik) and [Alex Menkov](https://openjdk.org/census#amenkov) .

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Commit messages:
 - Backport c46bed7292aad21b8cf9defcccac43c010a1f116

Changes: https://git.openjdk.org/jdk/pull/28859/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28859&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8371502
  Stats: 9 lines in 1 file changed: 7 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/28859.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28859/head:pull/28859

PR: https://git.openjdk.org/jdk/pull/28859