Fix offset carrying

Better fix Simple-Station#1

Content.Server/Nyanotrasen/Carrying/CarryingSystem.cs

@@ -1,3 +1,4 @@
+using System.Numerics;
 using System.Threading;
 using Content.Server.DoAfter;
 using Content.Server.Body.Systems;
@@ -64,7 +65,6 @@ public override void Initialize()
             SubscribeLocalEvent<CarriableComponent, CarryDoAfterEvent>(OnDoAfter);
         }
 
-
         private void AddCarryVerb(EntityUid uid, CarriableComponent component, GetVerbsEvent<AlternativeVerb> args)
         {
             if (!args.CanInteract || !args.CanAccess)
@@ -331,5 +331,32 @@ private float MassContest(EntityUid roller, EntityUid target, PhysicsComponent?
 
             return rollerPhysics.FixturesMass / targetPhysics.FixturesMass;
         }
+
+        public override void Update(float frameTime)
+        {
+            var query = EntityQueryEnumerator<BeingCarriedComponent>();
+            while (query.MoveNext(out var carried, out var comp))
+            {
+                var carrier = comp.Carrier;
+                if (carrier is not { Valid: true } || carried is not { Valid: true })
+                    continue;
+
+                // SOMETIMES - when an entity is inserted into disposals, or a cryosleep chamber - it can get re-parented without a proper reparent event
+                // when this happens, it needs to be dropped because it leads to weird behavior
+                if (Transform(carried).ParentUid != carrier)
+                {
+                    DropCarried(carrier, carried);
+                    continue;
+                }
+
+                // Make sure the carried entity is always centered relative to the carrier, as gravity pulls can offset it otherwise
+                var xform = Transform(carried);
+                if (!xform.LocalPosition.Equals(Vector2.Zero))
+                {
+                    xform.LocalPosition = Vector2.Zero;
+                }
+            }
+            query.Dispose();
+        }
     }
 }