ensureTopicKindRegistered is not a good idea

[qazwsxedckll]

I wrote a custom topic actor kind with presistency.

	persistenceStore := NewPersistentKeyValueStore(s.logger, s.repo)
	topicActorKind := cluster.NewKind(cluster.TopicActorKind, actor.PropsFromProducer(func() actor.Actor {
		return cluster.NewTopicActor(persistenceStore, s.logger)
	}))

If I forget to configure it on some node, especially in heterogeneous cluster, some topic actor kind without persistency will be spawned and will cause some problem.

func (c *Cluster) ensureTopicKindRegistered() {
	hasTopicKind := false
	for name := range c.kinds {
		if name == TopicActorKind {
			hasTopicKind = true
			break
		}
	}
	if !hasTopicKind {
		store := &EmptyKeyValueStore[*Subscribers]{}

		c.kinds[TopicActorKind] = NewKind(TopicActorKind, actor.PropsFromProducer(func() actor.Actor {
			return NewTopicActor(store, c.Logger())
		})).Build(c)
	}
}

I think it should be added explicitly by user if pubsub functions is used rather than automatically.

[AqlaSolutions]

Same for dotnet