RFR: 8374345: Restore the original copyright year in ExtremeFontSizeTest.java

[SendaoYan]

On Wed, 24 Dec 2025 16:38:03 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

> The copyright year in `test/jdk/java/awt/FontMetrics/ExtremeFontSizeTest.java` was replaced from 2024 to 2025 instead of adding 2025 by [JDK-8357672](https://bugs.openjdk.org/browse/JDK-8357672).
> 
> Restore the original year in the copyright header.

Marked as reviewed by syan (Committer).

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PR Review: https://git.openjdk.org/jdk/pull/28983#pullrequestreview-3611911608