=str #16085 PublisherSink is no longer a singleton

* PublisherSink is no longer a singleton
* rename existing Source/Sink tests to the latest names
* uncomment TickSource test with Zip

Fixes #16085
This is if you want to roll you own sink, that is actor based. It maps to the old KeyedDrain. I think the idea was that users could extend the Sink/Source much like the `TCPSinkSource` does.