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/VendingMachines/VendingMachineSystem.cs

@@ -115,7 +115,7 @@ namespace Content.Server.VendingMachines
         {
             var state = new VendingMachineInterfaceState(GetAllInventory(uid, component));
 
-            _userInterfaceSystem.TrySetUiState(uid, VendingMachineUiKey.Key, state);
+            _userInterfaceSystem.SetUiState(uid, VendingMachineUiKey.Key, state);
         }
 
         private void OnInventoryEjectMessage(EntityUid uid, VendingMachineComponent component, VendingMachineEjectMessage args)
@@ -123,7 +123,7 @@ namespace Content.Server.VendingMachines
             if (!this.IsPowered(uid, EntityManager))
                 return;
 
-            if (args.Session.AttachedEntity is not { Valid: true } entity || Deleted(entity))
+            if (args.Actor is not { Valid: true } entity || Deleted(entity))
                 return;
 
             AuthorizedVend(uid, entity, args.Type, args.ID, component);