Core/Creatures: Fixed sparring

Port From (https://github.com/TrinityCore/TrinityCore/commit/e1e53ee06e4b88d2f3804cfa53812e2e14d709a3)

Source/Game/Entities/Creature/Creature.cs

@@ -402,7 +402,7 @@ namespace Game.Entities
             InitializeMovementCapabilities();
 
             LoadCreaturesAddon();
-            LoadCreaturesSparringHealth();
+            LoadCreaturesSparringHealth(true);
             LoadTemplateImmunities(cInfo.CreatureImmunitiesId);
             GetThreatManager().EvaluateSuppressed();
 
@@ -866,7 +866,7 @@ namespace Game.Entities
             }
 
             LoadCreaturesAddon();
-            LoadCreaturesSparringHealth();
+            LoadCreaturesSparringHealth(true);
 
             //! Need to be called after LoadCreaturesAddon - MOVEMENTFLAG_HOVER is set there
             posZ += GetHoverOffset();
@@ -2562,10 +2562,10 @@ namespace Game.Entities
             return true;
         }
 
-        public void LoadCreaturesSparringHealth()
+        public void LoadCreaturesSparringHealth(bool force = false)
         {
             var templateValues = Global.ObjectMgr.GetCreatureTemplateSparringValues(GetCreatureTemplate().Entry);
-            if (!templateValues.Empty())
+            if (force || !templateValues.Empty())
             {
                 if (templateValues.Contains(_sparringHealthPct)) // only re-randomize sparring value if it was loaded from template (not when set to custom value from script)
                     _sparringHealthPct = templateValues.SelectRandom();