RFR: 8309702: Exclude java/lang/ScopedValue/StressStackOverflow.java from JTREG_TEST_THREAD_FACTORY=Virtual runs

[Daniel D. Daugherty]

Backport of:
8309702: Exclude java/lang/ScopedValue/StressStackOverflow.java from JTREG_TEST_THREAD_FACTORY=Virtual runs

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Commit messages:
 - Backport 307085618d76f49f982453253c27a3cb2b9728c3

Changes: https://git.openjdk.org/jdk21/pull/4/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21&pr=4&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8309702
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21/pull/4.diff
  Fetch: git fetch https://git.openjdk.org/jdk21.git pull/4/head:pull/4

PR: https://git.openjdk.org/jdk21/pull/4