RFR: 8355445: [java.nio] Use @requires tag instead of exiting based on "os.name" property value [v2]

[Lance Andersen]

On Fri, 25 Apr 2025 16:16:10 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> Use the `@requires` tag instead of obtaining the operating system name from the `os.name` property and then exiting if the test is not run on that operating system.
>
> Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8355445: Revert erroneous change to StreamTest

Marked as reviewed by lancea (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/24861#pullrequestreview-2794675254