RFR: 8366908: Use a different class for testing JDK-8351654 [v2]

[Coleen Phillimore]

On Fri, 5 Sep 2025 15:43:26 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> java.time.Duration is a migrated class (to be a value type) in the Valhalla repo, so it's preloaded, which causes this test to fail.  Using a different java.base class achieves the purpose of this test.
>> Tested with tier1.
>
> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
> 
>   remove unreachable line.

Thanks Chen and Leonid.

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PR Comment: https://git.openjdk.org/jdk/pull/27116#issuecomment-3259388793