Fix BUI EntitySystem injection (space-wizards#6515)

* Disable injection when creating BUI instances (the constructor will take care of it)

* Comment

* Release note

Author: Tayrtahn

RELEASE-NOTES.md

@@ -43,7 +43,7 @@ END TEMPLATE-->
 
 ### Bugfixes
 
-*None yet*
+* Fixed `EntitySystem` dependencies throwing an exception when opening a BUI.
 
 ### Other
 

Robust.Shared/GameObjects/Systems/SharedUserInterfaceSystem.cs

@@ -536,7 +536,8 @@ private void EnsureClientBui(Entity<UserInterfaceComponent> entity, Enum key, In
         // states. E.g., stripping UI used to throw NREs in some instances while fetching the identity of unknown
         // entities.
         var type = _reflection.LooseGetType(data.ClientType);
-        var boundUserInterface = (BoundUserInterface) _factory.CreateInstance(type, [entity.Owner, key]);
+        // No dependency injection because the BUI constructor will handle it.
+        var boundUserInterface = (BoundUserInterface) _factory.CreateInstance(type, [entity.Owner, key], inject: false);
         entity.Comp.ClientOpenInterfaces[key] = boundUserInterface;
 
         // This is just so we don't open while applying UI states.