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/AI/Utility/AiLogic/UtilityAI.cs

@@ -79,7 +79,7 @@ namespace Content.Server.AI.Utility.AiLogic
             }
         }*/
 
-        public override void Initialize()
+        protected override void Initialize()
         {
             if (BehaviorSets.Count > 0)
             {
@@ -94,7 +94,7 @@ namespace Content.Server.AI.Utility.AiLogic
             _planner = EntitySystem.Get<AiActionSystem>();
         }
 
-        public override void OnRemove()
+        protected override void OnRemove()
         {
             base.OnRemove();
             var currentOp = CurrentAction?.ActionOperators.Peek();