RFR: 8356108: Update SourceVersion.RELEASE_25 description for JEPs 511 and 512

[Chen Liang]

On Fri, 2 May 2025 21:47:17 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> Expected update to keep the description of language evolution accurate.

test/langtools/tools/javac/versions/Versions.java line 411:

> 409:              """
> 410:              import module java.base;
> 411:              public class New25 {

Should we make this a simple source file?

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PR Review Comment: https://git.openjdk.org/jdk/pull/25015#discussion_r2072207378