Refactor CoreWorker to remove TaskInterface (#5924)

* Remove TaskInterface

* Remove Status return value

* Remove CActorHandle, some return values, TaskSubmitter

* lint

* doc

* doc

* fix build

* lint

* Return Status, guarded by annotation, fail tasks for RECONSTRUCTING actors

* fix

* move annotation

* revert

* Fix core worker test

* nits

python/ray/actor.py

@@ -631,7 +631,8 @@ class ActorHandle(object):
             # TODO(swang): Accessing the worker's current task ID is not
             # thread-safe.
             # Local mode just uses the actor ID.
-            worker.core_worker.deserialize_actor_handle(state["core_handle"])
+            worker.core_worker.deserialize_and_register_actor_handle(
+                state["core_handle"])
             if hasattr(worker, "core_worker") else state["core_handle"],
             state["module_name"],
             state["class_name"],