NPE on `getObjectChangeSet().getChangesForAttributeNamed()`

[inad9300]

Describe the bug

I encountered the following null pointer exception:

Cannot invoke "org.eclipse.persistence.internal.sessions.ObjectChangeSet.getChangesForAttributeNamed(String)" 
because the return value of "org.eclipse.persistence.internal.descriptors.changetracking.AttributeChangeListener.getObjectChangeSet()" is null

• EclipseLink version: 4.0.5
• Java/JDK version: 21

The following line seems most likely to be the culprit:

eclipselink/foundation/org.eclipse.persistence.core/src/main/java/org/eclipse/persistence/descriptors/changetracking/AttributeChangeTrackingPolicy.java

Line 142 in dfc411d

ChangeRecord record = (ChangeRecord) ((AttributeChangeListener)listener).getObjectChangeSet().getChangesForAttributeNamed(mapping.getAttributeName());

Unfortunately, I have no further details than this.