Refactor pathfinding updates and add AccessReader support (#1183)

There was some extra bloat in the path graph updates.
Now the queue should also just run if it gets too big regardless.
Un-anchored physics objects are no longer a hard fail for pathfinding.
Add AccessReader support so open / close doors show up for pathfinding
AI also ensure they call the operator's shutdown when they're shutdown so that should cancel the pathfinding job.

I tried to split these into 2 commits but they were kinda coupled together

Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>

Content.Server/GameObjects/Components/Doors/ServerDoorComponent.cs

@@ -154,6 +154,8 @@ namespace Content.Server.GameObjects
                 State = DoorState.Open;
                 SetAppearance(DoorVisualState.Open);
             }, _cancellationTokenSource.Token);
+            
+            Owner.EntityManager.EventBus.RaiseEvent(EventSource.Local, new AccessReaderChangeMessage(Owner.Uid, false));
         }
 
         public virtual bool CanClose()
@@ -203,6 +205,7 @@ namespace Content.Server.GameObjects
                     occluder.Enabled = true;
                 }
             }, _cancellationTokenSource.Token);
+            Owner.EntityManager.EventBus.RaiseEvent(EventSource.Local, new AccessReaderChangeMessage(Owner.Uid, true));
             return true;
         }