Diff at module-info should show

Context: https://github.com/JabRef/jabref/pull/14305

The diff of `module-info.java` is strange. Same statements are marked samehow.

<img width="2735" height="1246" alt="Image" src="https://github.com/user-attachments/assets/79a03bd0-fe0c-4c07-821b-376675f606cb" />
