Optimise spreadersystem (#13329)

* Optimise spreadersystem

It makes entity spawning slower.

* Remove redundant airtightchangedevent

* oop

Content.Server/Doors/Systems/DoorSystem.cs

@@ -67,7 +67,7 @@ public sealed class DoorSystem : SharedDoorSystem
             return;
 
         if (door.ChangeAirtight && TryComp(uid, out AirtightComponent? airtight))
-            _airtightSystem.SetAirblocked(airtight, collidable);
+            _airtightSystem.SetAirblocked(uid, airtight, collidable);
 
         // Pathfinding / AI stuff.
         RaiseLocalEvent(new AccessReaderChangeEvent(uid, collidable));