I think we broke the name param to action() when fired from workers

[rjrjr]

I'm giving my app logging of every WorkflowAction fired, via RenderContextInterceptor.onActionSent. I find that the toString() of an action fired by a Worker is prefixed sendAndAwaitApplication(com.squareup.workflow1.EmitWorkerOutputAction(worker=, and completely omits any name parameter provided to StatefulWorkflow.action() et al. Somewhere along the way with all this wrapping we've clobbered an important toString(), or failed to call it.

[rjrjr]

The trail starts with the toString() override in Sink.sendAndAwaitApplication, com/squareup/workflow1/Sink.kt:84

[rjrjr]

And it ends at EmitWorkerOutputAction.toString, which has no visibility into the core action it's associated with.

[rjrjr]

Accidentally closed by #1241, by a commit message explaining "this doesn't fix #391".