Docking system can no longer forcibly open welded doors. (#12149)

* Docking system can no longer forcibly open welded doors.

* bolt the doors after trying to open them

* more door logic

Content.Shared/Doors/Systems/SharedDoorSystem.cs

@@ -316,6 +316,11 @@ public abstract class SharedDoorSystem : EntitySystem
         if (!Resolve(uid, ref door))
             return false;
 
+        // since both closing/closed and welded are door states, we need to prevent 'closing'
+        // a welded door or else there will be weird state bugs
+        if (door.State == DoorState.Welded)
+            return false;
+
         var ev = new BeforeDoorClosedEvent(door.PerformCollisionCheck);
         RaiseLocalEvent(uid, ev, false);
         if (ev.Cancelled)