Cannot format file when using import module (JEP 511) in JDK 25

Java 25 is now made generally available. JEP 513 allows the import modules declaration (finalized), but for now, Google Java Format did not support formatting the files that uses `import module`:

<img width="1920" height="1032" alt="Image" src="https://github.com/user-attachments/assets/7623baf0-09e1-4233-b1f4-880c0e26dfd4" />