Fixes reset propagation for atmospheric alarm receivers, adds CVar for fire alarm all access (#11020)

* adds a check for if a firelock is powered before auto-opening

* fixes issue where resets would not propagate properly

* adds cvar bound for fire alarm access (defaults to all access)

Content.Server/Doors/Systems/FirelockSystem.cs

@@ -31,7 +31,7 @@ namespace Content.Server.Doors.Systems
 
         private void OnBeforeDoorOpened(EntityUid uid, FirelockComponent component, BeforeDoorOpenedEvent args)
         {
-            if (component.IsHoldingFire() || component.IsHoldingPressure())
+            if (!this.IsPowered(uid, EntityManager) || component.IsHoldingFire() || component.IsHoldingPressure())
                 args.Cancel();
         }