Core/Auras: Implemented new spell proc attribute PROC_ATTR_USE_STACKS_FOR_CHARGES to drop stacks instead of charges

Port From (https://github.com/TrinityCore/TrinityCore/commit/54c5cc97f53dd456a4496d23c0b3375f9280639a)

Source/Framework/Constants/Spells/SpellConst.cs

@@ -2412,6 +2412,7 @@ namespace Framework.Constants
         TriggeredCanProc = 0x02, // aura can proc even with triggered spells
         ReqPowerCost = 0x04, // requires triggering spell to have a power cost for aura proc
         ReqSpellmod = 0x08,  // requires triggering spell to be affected by proccing aura to drop charges
+        UseStacksForCharges = 0x10, // consuming proc drops a stack from proccing aura instead of charge
         ReduceProc60 = 0x80  // aura should have a reduced chance to proc if level of proc Actor > 60
     }
 

Source/Game/Spells/Auras/Aura.cs

@@ -1834,8 +1834,13 @@ namespace Game.Spells
             }
 
             // Remove aura if we've used last charge to proc
-            if (IsUsingCharges() && GetCharges() == 0)
-                Remove();
+            if (IsUsingCharges())
+            {
+                if (GetCharges() == 0)
+                    Remove();
+            }
+            else if (Global.SpellMgr.GetSpellProcEntry(m_spellInfo).AttributesMask.HasAnyFlag(ProcAttributes.UseStacksForCharges))
+                ModStackAmount(-1);
         }
 
         public float CalcPPMProcChance(Unit actor)