Unload Workflow during Actor Garbage Collection (GC)

[cjrosa]

InvokeWithTimer() is throwing an ObjectDisposedException when called as part of the Actor GC process. More specifically, UnloadWorkflow's await InvokeAndPump(workflow.UnloadAsync) seems to be causing a series of Async/Pumped operations that result in the aforementioned exception.

I adjusted the Actor's ActorGarbageCollectionSettings setting to 10/2 (scan/idle) with the sample WF adjusted to while(true)/Delay(1 min)/Invoke()