RFR: 8342074: Fix runtime/Thread/TestAlwaysPreTouchStacks.java to be flagless or accept VM flags

[Leonid Mesnik]

On Thu, 7 Nov 2024 09:32:17 GMT, Afshin Zafari <azafari at openjdk.org> wrote:

> `createTestJavaProcessBuilder` is used for creating and running a new Java process that accepts flags.

Marked as reviewed by lmesnik (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/21945#pullrequestreview-2459535677