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.Shared/Movement/Components/SharedPlayerInputMoverComponent.cs

@@ -114,7 +114,7 @@ namespace Content.Shared.Movement.Components
         public bool DiagonalMovementEnabled => _configurationManager.GetCVar<bool>(CCVars.GameDiagonalMovement);
 
         /// <inheritdoc />
-        public override void Initialize()
+        protected override void Initialize()
         {
             base.Initialize();
             Owner.EnsureComponentWarn<PhysicsComponent>();