[jdk21u-dev] RFR: 8320665: update jdk_core at open/test/jdk/TEST.groups

[Andrew Lu]

I backport this for parity with 21.0.6-oracle.

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Commit messages:
 - Backport da7cf258bb5b24788409dde084ad012bd64a032a

Changes: https://git.openjdk.org/jdk21u-dev/pull/1005/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1005&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8320665
  Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1005.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1005/head:pull/1005

PR: https://git.openjdk.org/jdk21u-dev/pull/1005