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.Client/Spawners/ClientEntitySpawnerComponent.cs

@@ -17,13 +17,13 @@ namespace Content.Client.Spawners
 
         private readonly List<IEntity> _entity = new();
 
-        public override void Initialize()
+        protected override void Initialize()
         {
             base.Initialize();
             SpawnEntities();
         }
 
-        public override void OnRemove()
+        protected override void OnRemove()
         {
             RemoveEntities();
             base.OnRemove();