Core/Auras: Ensure aura target of SPELL_AURA_TRIGGER_SPELL_ON_POWER_PCT has required power type

Port From (https://github.com/TrinityCore/TrinityCore/commit/fc54ae79a95bc162bd0ceec199561af873576a23)

Source/Game/Entities/StatSystem.cs

@@ -764,6 +764,9 @@ namespace Game.Entities
                         if (effect.GetAuraType() == AuraType.TriggerSpellOnPowerPct)
                         {
                             int maxPower = GetMaxPower(power);
+                            if (maxPower == 0)
+                                continue;
+
                             oldValueCheck = MathFunctions.GetPctOf(oldVal, maxPower);
                             newValueCheck = MathFunctions.GetPctOf(newVal, maxPower);
                         }

Source/Game/Spells/Auras/AuraEffect.cs

@@ -4886,7 +4886,11 @@ namespace Game.Spells
 
             int effectAmount = GetAmount();
             uint triggerSpell = GetSpellEffectInfo().TriggerSpell;
-            float powerAmountPct = MathFunctions.GetPctOf(target.GetPower((PowerType)GetMiscValue()), target.GetMaxPower((PowerType)GetMiscValue()));
+            int maxPower = target.GetMaxPower((PowerType)GetMiscValue());
+            if (maxPower == 0)
+                return;
+
+            float powerAmountPct = MathFunctions.GetPctOf(target.GetPower((PowerType)GetMiscValue()), maxPower);
 
             switch ((AuraTriggerOnPowerChangeDirection)GetMiscValueB())
             {