[jdk25] RFR: 8338140: (str) Add notes to String.trim and String.isEmpty pointing to newer APIs

[Stuart Marks]

On Tue, 17 Jun 2025 17:15:21 GMT, Stuart Marks <smarks at openjdk.org> wrote:

> Hi all,
> 
> This pull request contains a backport of commit [06d804a0](https://github.com/openjdk/jdk/commit/06d804a0f004f9403c7c12e1a9f2ca8775c639f7) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Stuart Marks on 16 Jun 2025 and was reviewed by Naoto Sato @naotoj and Brian Burkhalter @bplb.
> 
> Thanks!

Thanks all for the reviews!

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PR Comment: https://git.openjdk.org/jdk/pull/25858#issuecomment-2981783816