RFR: 8359127: Amend java/nio/channels/DatagramChannel/PromiscuousIPv6.java to use @requires for OS platform selection [v2]

[Daniel Fuchs]

On Fri, 13 Jun 2025 13:25:38 GMT, Dermot Boyle <duke at openjdk.org> wrote:

>> Replaced programmatic check for the OS platform (which threw a Skipped exception) with JTreg @requires.
>
> Dermot Boyle has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Removed unused supportedByPlatform() method definition

Marked as reviewed by dfuchs (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/25781#pullrequestreview-2925141994