Mobstate Refactor (#13389)

Refactors mobstate and moves mob health thresholds to their own component

Co-authored-by: DrSmugleaf <drsmugleaf@gmail.com>

Content.Server/Polymorph/Systems/PolymorphableSystem.cs

@@ -9,6 +9,7 @@ using Content.Shared.Actions;
 using Content.Shared.Actions.ActionTypes;
 using Content.Shared.Damage;
 using Content.Shared.Hands.EntitySystems;
+using Content.Shared.Mobs.Systems;
 using Content.Shared.Polymorph;
 using Robust.Server.Containers;
 using Robust.Shared.Containers;
@@ -29,6 +30,7 @@ namespace Content.Server.Polymorph.Systems
         [Dependency] private readonly ServerInventorySystem _inventory = default!;
         [Dependency] private readonly SharedHandsSystem _sharedHands = default!;
         [Dependency] private readonly DamageableSystem _damageable = default!;
+        [Dependency] private readonly MobThresholdSystem _mobThresholdSystem = default!;
         [Dependency] private readonly IMapManager _mapManager = default!;
         [Dependency] private readonly HumanoidSystem _humanoid = default!;
         [Dependency] private readonly ContainerSystem _container = default!;
@@ -114,7 +116,7 @@ namespace Content.Server.Polymorph.Systems
             //Transfers all damage from the original to the new one
             if (proto.TransferDamage &&
                 TryComp<DamageableComponent>(child, out var damageParent) &&
-                _damageable.GetScaledDamage(target, child, out var damage) &&
+                _mobThresholdSystem.GetScaledDamage(target, child, out var damage) &&
                 damage != null)
             {
                 _damageable.SetDamage(damageParent, damage);