Content update for UI prediction (#27214)

* Content update for UI refactor

* Big update

* Sharing

* Remaining content updates

* First big update

* Prototype updates

* AUGH

* Fix UI comp ref

* Cleanup

- Fix predicted message, fix item slots, fix interaction range check.

* Fix regressions

* Make this predictive

idk why it wasn't.

* Fix slime merge

* Merge conflict

* Fix merge

Content.Server/Interaction/InteractionSystem.cs

@@ -16,13 +16,6 @@ namespace Content.Server.Interaction
         [Dependency] private readonly SharedContainerSystem _container = default!;
         [Dependency] private readonly UserInterfaceSystem _uiSystem = default!;
 
-        public override void Initialize()
-        {
-            base.Initialize();
-
-            SubscribeLocalEvent<BoundUserInterfaceCheckRangeEvent>(HandleUserInterfaceRangeCheck);
-        }
-
         public override bool CanAccessViaStorage(EntityUid user, EntityUid target)
         {
             if (Deleted(target))
@@ -37,26 +30,8 @@ namespace Content.Server.Interaction
             if (storage.Container?.ID != container.ID)
                 return false;
 
-            if (!TryComp(user, out ActorComponent? actor))
-                return false;
-
             // we don't check if the user can access the storage entity itself. This should be handed by the UI system.
-            return _uiSystem.SessionHasOpenUi(container.Owner, StorageComponent.StorageUiKey.Key, actor.PlayerSession);
-        }
-
-        private void HandleUserInterfaceRangeCheck(ref BoundUserInterfaceCheckRangeEvent ev)
-        {
-            if (ev.Player.AttachedEntity is not { } user || ev.Result == BoundUserInterfaceRangeResult.Fail)
-                return;
-
-            if (InRangeUnobstructed(user, ev.Target, ev.UserInterface.InteractionRange))
-            {
-                ev.Result = BoundUserInterfaceRangeResult.Pass;
-            }
-            else
-            {
-                ev.Result = BoundUserInterfaceRangeResult.Fail;
-            }
+            return _uiSystem.IsUiOpen(container.Owner, StorageComponent.StorageUiKey.Key, user);
         }
     }
 }