Merge pull request DependencyTrack#2576 from syalioune/fix/issue-2420…

…-empty-mail-content

Fix: Null subject on project audit change notification mails

Closes DependencyTrack#2420

src/main/java/org/dependencytrack/notification/NotificationRouter.java

@@ -116,7 +116,7 @@ public Notification restrictNotificationToRuleProjects(Notification initialNotif
     }
 
     private boolean canRestrictNotificationToRuleProjects(Notification initialNotification, NotificationRule rule) {
-        return (initialNotification.getSubject() instanceof NewVulnerabilityIdentified || initialNotification.getSubject() instanceof AnalysisDecisionChange) &&
+        return initialNotification.getSubject() instanceof NewVulnerabilityIdentified &&
                 rule.getProjects() != null
                 && rule.getProjects().size() > 0;
     }