Remove IActionBlocker.CanMove (#4449)

* Remove IActionBlocker.CanMove

Ported the remainders over to using MovementAttemptEvent which should also help make mob movement a bit faster.

* Make that check faster

Content.Shared/Buckle/Components/SharedBuckleComponent.cs

@@ -36,11 +36,6 @@ namespace Content.Shared.Buckle.Components
 
         public abstract bool TryBuckle(IEntity? user, IEntity to);
 
-        bool IActionBlocker.CanMove()
-        {
-            return !Buckled;
-        }
-
         bool IActionBlocker.CanChangeDirection()
         {
             return !Buckled;