[jdk21u-dev] RFR: 8357173: Split jtreg test group jdk tier3

[Matthias Baesken]

On Sun, 20 Jul 2025 10:08:22 GMT, Goetz Lindenmaier <goetz at openjdk.org> wrote:

> I backport this for parity with 21.0.9-oracle.
> 
> Trivial resolves because head has jdk_since_checks

Marked as reviewed by mbaesken (Reviewer).

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PR Review: https://git.openjdk.org/jdk21u-dev/pull/2000#pullrequestreview-3036911802