Engine Entity Anchoring Changes (#4195)

* Converted all SnapGridPositionChangedEvent subscriptions to AnchorStateChangedEvent.

* Fixes power tests with new anchored requirements.

* Moved AnchorableComponent into construction.
AnchorableComponent now uses Transform.Anchored.

* Fixed bug with nodes, power works again.

* Adds lifetime stages to Component.

* Update Engine to v0.4.70.

Content.Server/NodeContainer/Nodes/PipeNode.cs

@@ -125,11 +125,6 @@ namespace Content.Server.GameObjects.Components.NodeContainer.Nodes
             UpdateAdjacentConnectedDirections();
         }
 
-        public override void OnSnapGridMove()
-        {
-            OnConnectedDirectionsNeedsUpdating();
-        }
-
         public void JoinPipeNet(IPipeNet pipeNet)
         {
             _pipeNet = pipeNet;