Fixing some of the old display name structure

quartz/src/main/java/com/vitorpamplona/quartz/events/ContactListEvent.kt

@@ -431,12 +431,8 @@ class UserMetadata {
         return lud16 ?: lud06
     }
 
-    fun bestUsername(): String? {
-        return name ?: username
-    }
-
-    fun bestDisplayName(): String? {
-        return displayName
+    fun bestName(): String? {
+        return displayName ?: name ?: username
     }
 
     fun nip05(): String? {