fix: Prepares for IPooledEnumerable removal (#1548)

### Summary

- Removes `IPooledEnumerable` (non-generic)
- Changes `IPooledEnumerable<T>` so that  `Free()` is replaced with the `IDisposable` pattern

Projects/UOContent/Items/Addons/SHTeleporter.cs

@@ -270,7 +270,6 @@ namespace Server.Items
             {
                 var eable = map.GetItemsInRange<SHTeleporter>(p, 0);
                 var teleporter = eable.FirstOrDefault(item => item.Z == p.Z);
-                eable.Free();
                 return teleporter;
             }
 

Projects/UOContent/Items/Containers/MarkContainer.cs

@@ -136,12 +136,9 @@ public partial class MarkContainer : LockableContainer
         {
             if (item.Z == p.Z)
             {
-                eable.Free();
                 return true;
             }
         }
-
-        eable.Free();
         return false;
     }
 

Projects/UOContent/Items/Misc/Firebomb.cs

@@ -132,7 +132,6 @@ public partial class Firebomb : Item
                                 targets.Enqueue(m);
                             }
                         }
-                        eable.Free();
 
                         while (targets.Count > 0)
                         {

Projects/UOContent/Items/Misc/MorphItem.cs

@@ -88,8 +88,6 @@ public partial class MorphItem : Item
             }
         }
 
-        eable.Free();
-
         ItemID = found ? _activeItemId : _inactiveItemId;
 
         Visible = ItemID != 0x1;

Projects/UOContent/Items/Misc/OilFlask.cs

@@ -60,8 +60,6 @@ public partial class OilFlask : Item
                     }
                 }
 
-                eable.Free();
-
                 if (!didStack)
                 {
                     emptyFlask.MoveToWorld(Location, Map);

Projects/UOContent/Items/Skill Items/Camping/Campfire.cs

@@ -143,8 +143,6 @@ public partial class Campfire : Item
                 pm.SendLocalizedMessage(500620); // You feel it would take a few moments to secure your camp.
             }
         }
-
-        eable.Free();
     }
 
     private void ClearEntries()

Projects/UOContent/Items/Skill Items/Magical/Potions/Explosion Potions/BaseExplosionPotion.cs

@@ -167,8 +167,6 @@ public abstract partial class BaseExplosionPotion : BasePotion
             }
         }
 
-        eable.Free();
-
         var min = Scale(from, MinDamage);
         var max = Scale(from, MaxDamage);
 

Projects/UOContent/Items/Skill Items/Misc/FireHorn.cs

@@ -115,8 +115,6 @@ public partial class FireHorn : Item
             }
         }
 
-        eable.Free();
-
         if (targets.Count > 0)
         {
             var prov = from.Skills.Provocation.Fixed;

Projects/UOContent/Items/Weapons/Abilities/FrenziedWhirlwind.cs

@@ -63,8 +63,6 @@ namespace Server.Items
                 }
             }
 
-            eable.Free();
-
             if (didEffect)
             {
                 attacker.FixedEffect(0x3728, 10, 15);

Projects/UOContent/Items/Weapons/Abilities/LightningArrow.cs

@@ -1,6 +1,6 @@
 using Server.Spells;
 using System;
-using System.Collections.Generic;
+using Server.Collections;
 
 namespace Server.Items
 {
@@ -27,29 +27,25 @@ namespace Server.Items
                 return;
             }
 
-            List<Mobile> targets = new List<Mobile>();
-            IPooledEnumerable eable = defender.GetMobilesInRange(5);
-
-            foreach (Mobile m in eable)
+            using var list = PooledRefList<Mobile>.Create();
+            foreach (Mobile m in defender.GetMobilesInRange(5))
             {
                 if (m != defender && m != attacker && SpellHelper.ValidIndirectTarget(attacker, m) && m?.Deleted == false &&
                     m.Map == attacker.Map && m.Alive && attacker.CanSee(m) && attacker.CanBeHarmful(m) &&
                     attacker.InRange(m, weapon.MaxRange) && attacker.InLOS(m))
                 {
-                    targets.Add(m);
+                    list.Add(m);
                 }
             }
 
-            eable.Free();
             defender.BoltEffect(0);
 
-            var mobilesLeft = Math.Min(targets.Count, 2);
-            while (mobilesLeft-- > 0)
-            {
-                var index = Utility.Random(targets.Count);
-                var m = targets[index];
-                targets.RemoveAt(index);
+            var count = Math.Min(list.Count, 2);
+            list.Shuffle();
 
+            for (var i = 0; i < count; i++)
+            {
+                var m = list[i];
                 m.BoltEffect(0);
                 AOS.Damage(m, attacker, Utility.RandomMinMax(29, 40), 0, 0, 0, 0, 100);
             }

Projects/UOContent/Items/Weapons/Abilities/MysticArc.cs

@@ -28,9 +28,7 @@ public class MysticArc : WeaponAbility
         }
 
         using var queue = PooledRefQueue<Mobile>.Create();
-        IPooledEnumerable eable = attacker.GetMobilesInRange(weapon.MaxRange);
-
-        foreach (Mobile m in eable)
+        foreach (Mobile m in attacker.GetMobilesInRange(weapon.MaxRange))
         {
             if (m == defender)
             {
@@ -45,8 +43,6 @@ public class MysticArc : WeaponAbility
             queue.Enqueue(m);
         }
 
-        eable.Free();
-
         if (queue.Count > 0)
         {
             _target = queue.PeekRandom();

Projects/UOContent/Items/Weapons/Abilities/WhirlwindAttack.cs

@@ -51,8 +51,6 @@ namespace Server.Items
                 }
             }
 
-            eable.Free();
-
             if (queue.Count <= 0)
             {
                 return;

Projects/UOContent/Items/Weapons/BaseWeapon.cs

@@ -1729,8 +1729,6 @@ public abstract partial class BaseWeapon : Item, IWeapon, IFactionItem, ICraftab
             }
         }
 
-        eable.Free();
-
         return inPack switch
         {
             >= 5 => 100,
@@ -1765,8 +1763,6 @@ public abstract partial class BaseWeapon : Item, IWeapon, IFactionItem, ICraftab
                     break;
                 }
             }
-
-            eable.Free();
         }
 
         PlaySwingAnimation(attacker);
@@ -3587,8 +3583,6 @@ public abstract partial class BaseWeapon : Item, IWeapon, IFactionItem, ICraftab
             }
         }
 
-        eable.Free();
-
         if (queue.Count == 0)
         {
             return;