DistributedPubSub: topic names with characters that require UriEncode escaping can't be received by subscribers

[Aaronontheweb]

Version Information
Version of Akka.NET? v1.5.41
Which Akka.NET Modules? Akka.Cluster.Tools

Describe the bug

If a user Subscribe to a topic that contains a Uri-unfriendly character, such as this: {parentTopic}:{childTopic} - that : is going to get UriEncode-d by the Mediator when we create the Topic child actor for managing that topic.

It looks like subsequent when Publish is attempting on that topic will get DeadLetter'd because we don't also encode the Topic name on each subsequent publish operation - and since the topic name and the Topic actor name are now different, these messages get viewed as "having no subscribers" and are DeadLetter'd per #7626

Expected behavior

Publishing should still work even if the topic names have Uri-unfriendly characters in them.

Actual behavior

Messages appear to get permanently lost upon publication.

[Arkatufus]

This is weird because the published message does get uri encoded during publish:

akka.net/src/contrib/cluster/Akka.Cluster.Tools/PublishSubscribe/DistributedPubSubMediator.cs

Lines 200 to 207 in 8d27ded

	Receive<Publish>(publish =>
	{
	string path = Internal.Utils.MakeKey(Self.Path / Internal.Utils.EncodeName(publish.Topic));
	if (publish.SendOneMessageToEachGroup)
	PublishToEachGroup(path, publish);
	else
	PublishMessage(path, publish);
	});

Could there be other bugs involved?