[Hotfix] Wizard Rod doesn't gib the wizard. (#40041)

* Title

* Tired

* That shit did nothing goddamn

* Fix for real

* Use og code

* Hmmm borgaer

---------

Co-authored-by: Princess Cheeseballs <66055347+Pronana@users.noreply.github.com>

Content.Server/Polymorph/Components/PolymorphedEntityComponent.cs

@@ -20,6 +20,12 @@ public sealed partial class PolymorphedEntityComponent : Component
     [DataField(required: true)]
     public EntityUid? Parent;
 
+    /// <summary>
+    /// Whether this polymorph has been reverted.
+    /// </summary>
+    [DataField]
+    public bool Reverted;
+
     /// <summary>
     /// The amount of time that has passed since the entity was created
     /// used for tracking the duration

Content.Server/Polymorph/Systems/PolymorphSystem.cs

@@ -128,13 +128,12 @@ public sealed partial class PolymorphSystem : EntitySystem
 
     private void OnBeforeFullySliced(Entity<PolymorphedEntityComponent> ent, ref BeforeFullySlicedEvent args)
     {
-        var (_, comp) = ent;
-        if (comp.Configuration.RevertOnEat)
-        {
+        if (ent.Comp.Reverted || !ent.Comp.Configuration.RevertOnEat)
+            return;
+
         args.Cancel();
         Revert((ent, ent));
     }
-    }
 
     /// <summary>
     /// It is possible to be polymorphed into an entity that can't "die", but is instead
@@ -142,14 +141,17 @@ public sealed partial class PolymorphSystem : EntitySystem
     /// </summary>
     private void OnDestruction(Entity<PolymorphedEntityComponent> ent, ref DestructionEventArgs args)
     {
-        if (ent.Comp.Configuration.RevertOnDeath)
-        {
+        if (ent.Comp.Reverted || !ent.Comp.Configuration.RevertOnDeath)
+            return;
+
         Revert((ent, ent));
     }
-    }
 
     private void OnPolymorphedTerminating(Entity<PolymorphedEntityComponent> ent, ref EntityTerminatingEvent args)
     {
+        if (ent.Comp.Reverted)
+            return;
+
         if (ent.Comp.Configuration.RevertOnDelete)
             Revert(ent.AsNullable());
 
@@ -298,8 +300,6 @@ public sealed partial class PolymorphSystem : EntitySystem
         if (component.Parent is not { } parent)
             return null;
 
-        // Clear our reference to the original entity
-        component.Parent = null;
         if (Deleted(parent))
             return null;
 
@@ -316,6 +316,8 @@ public sealed partial class PolymorphSystem : EntitySystem
         _transform.SetParent(parent, parentXform, uidXform.ParentUid);
         _transform.SetCoordinates(parent, parentXform, uidXform.Coordinates, uidXform.LocalRotation);
 
+        component.Reverted = true;
+
         if (component.Configuration.TransferDamage &&
             TryComp<DamageableComponent>(parent, out var damageParent) &&
             _mobThreshold.GetScaledDamage(uid, parent, out var damage) &&