Core/Misc: Reduce differences between cores

Port From (https://github.com/TrinityCore/TrinityCore/commit/ff6a107ac0e7a82d728f8fd2fd8423743233a474)

Source/Game/Spells/Auras/Aura.cs

@@ -405,6 +405,17 @@ namespace Game.Spells
             }
         }
 
+        public bool CanPeriodicTickCrit()
+        {
+            if (GetSpellInfo().HasAttribute(SpellAttr2.CantCrit))
+                return false;
+
+            if (GetSpellInfo().HasAttribute(SpellAttr8.PeriodicCanCrit))
+                return true;
+
+            return false;
+        }
+
         public virtual void Dispose()
         {
             // unload scripts

Source/Game/Spells/Auras/AuraEffect.cs

@@ -5667,20 +5667,9 @@ namespace Game.Spells
             caster.SendSpellNonMeleeDamageLog(damageInfo);
         }
 
-        bool CanPeriodicTickCrit()
-        {
-            if (GetSpellInfo().HasAttribute(SpellAttr2.CantCrit))
-                return false;
-
-            if (GetSpellInfo().HasAttribute(SpellAttr8.PeriodicCanCrit))
-                return true;
-
-            return false;
-        }
-
         float CalcPeriodicCritChance(Unit caster)
         {
-            if (caster == null || !CanPeriodicTickCrit())
+            if (caster == null || !GetBase().CanPeriodicTickCrit())
                 return 0.0f;
 
             Player modOwner = caster.GetSpellModOwner();