[#1546] morph/event: Export NotificationHandlerInfo fields

Hiding them achieves nothing, as the struct has no methods and is not
used concurrently.

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

cmd/frostfs-node/morph.go

@@ -223,21 +223,17 @@ func registerNotificationHandlers(scHash util.Uint160, lis event.Listener, parse
 	subs map[event.Type][]event.Handler,
 ) {
 	for typ, handlers := range subs {
-		hi := event.NotificationHandlerInfo{}
-		hi.SetType(typ)
-		hi.SetScriptHash(scHash)
-
 		p, ok := parsers[typ]
 		if !ok {
 			panic(fmt.Sprintf("missing parser for event %s", typ))
 		}
 
-		hi.SetParser(p)
-
-		for _, h := range handlers {
-			hi.AddHandler(h)
-		}
-		lis.RegisterNotificationHandler(hi)
+		lis.RegisterNotificationHandler(event.NotificationHandlerInfo{
+			Contract: scHash,
+			Type:     typ,
+			Parser:   p,
+			Handlers: handlers,
+		})
 	}
 }