[jdk21u-dev] RFR: 8342074: Fix runtime/Thread/TestAlwaysPreTouchStacks.java to be flagless or accept VM flags

[Goetz Lindenmaier]

I backport this for parity with 21.0.9-oracle

Resolved due to context, maybe clean.

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Commit messages:
 - backport 9291abc6337f8cf480806f4b2996ec905b021704

Changes: https://git.openjdk.org/jdk21u-dev/pull/2088/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2088&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8342074
  Stats: 8 lines in 3 files changed: 2 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2088.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2088/head:pull/2088

PR: https://git.openjdk.org/jdk21u-dev/pull/2088