[jdk25u-dev] RFR: 8374434: Several JShell tests report JUnit discovery warnings

[Goetz Lindenmaier]

I backport this for parity with 25.0.3-oracle.

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Depends on: https://git.openjdk.org/jdk25u-dev/pull/325

Commit messages:
 - backport e6abf98e35079ed1b5547f2cc0ac6f518b78d67b

Changes: https://git.openjdk.org/jdk25u-dev/pull/329/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u-dev&pr=329&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8374434
  Stats: 7 lines in 3 files changed: 0 ins; 4 del; 3 mod
  Patch: https://git.openjdk.org/jdk25u-dev/pull/329.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u-dev.git pull/329/head:pull/329

PR: https://git.openjdk.org/jdk25u-dev/pull/329