ClassCastException error on Java 24

[Akiak7]

java.lang.ClassCastException: Cannot cast java.util.concurrent.ConcurrentHashMap to java.util.HashMap
at mirror.normalasm.common.java.JavaFixes.run(JavaFixes.java:47)

This appears a few times in the logs, and apparently it is due to Java 24 changing that map to a ConcurrentHashMap.