GH-629 - Improve repository interaction in DefaultEventPublicationRegistry.

DefaultEventPublicationRegistry is now directly invoking the corresponding repository to delete events older than a certain duration.

Author: odrotbohm

spring-modulith-events/spring-modulith-events-core/src/main/java/org/springframework/modulith/events/core/DefaultEventPublicationRegistry.java

@@ -158,9 +158,7 @@ public void deletePublicationsOlderThan(Duration duration) {
 
 		var now = clock.instant();
 
-		deletePublications(event -> event.getCompletionDate()
-				.filter(date -> date.isBefore(now.minus(duration)))
-				.isPresent());
+		events.deleteCompletedPublicationsBefore(now.minus(duration));
 	}
 
 	/*