[jdk21u-dev] RFR: 8341997: Tests create files in src tree instead of scratch dir

[SendaoYan]

Hi all,

This pull request contains a backport of commit [b9cabbec](https://github.com/openjdk/jdk/commit/b9cabbecdac27ae8b93df88660a4a0f3f60e6828) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Brian Burkhalter on 15 Oct 2024 and was reviewed by Erik Joelsson and Jaikiran Pai.

Thanks!

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Commit messages:
 - Backport caa8f35ed45fac4e4c0d1e2c3cdc93c2514fade9

Changes: https://git.openjdk.org/jdk21u-dev/pull/1062/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1062&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341997
  Stats: 6 lines in 3 files changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1062.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1062/head:pull/1062

PR: https://git.openjdk.org/jdk21u-dev/pull/1062