RFR: 8374320: Update copyright year to 2025 for java.net.http in files where it was missed

[Alexey Ivanov]

On Wed, 24 Dec 2025 07:00:11 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

> > I checked the http3 branch in the sandbox and several of these files had their last change in 2024, not 2025. When JEP 517 integrated then it might appear that they were created in 2025 even though they have exited in the http3 branch for longer than that.
> 
> correct, they appeared in jdk/master in 2025 as new files as part of the JEP integration. Not sure whether they should be excluded or not, since they were touched this year in some way.

Since the development branch is gone and the commits are squashed, these are the new files from the `master` branch perspective. I think the copyright year can still be bumped up in them, preserving the original year.

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PR Comment: https://git.openjdk.org/jdk/pull/28973#issuecomment-3702417860