Core/SAI: Implemented SMARTCAST_AURA_NOT_PRESENT as castflag, the spell will only be casted if the target does not have the aura

Signed-off-by: Subv <s.v.h21@hotmail.com>

src/server/game/AI/SmartScripts/SmartScriptMgr.h

@@ -1180,7 +1180,7 @@ enum SmartCastFlags
     //CAST_FORCE_CAST             = 0x04,                     //Forces cast even if creature is out of mana or out of range
     //CAST_NO_MELEE_IF_OOM        = 0x08,                     //Prevents creature from entering melee if out of mana or out of range
     //CAST_FORCE_TARGET_SELF      = 0x10,                     //Forces the target to cast this spell on itself
-    //CAST_AURA_NOT_PRESENT       = 0x20,                     //Only casts the spell if the target does not have an aura from the spell
+    SMARTCAST_AURA_NOT_PRESENT       = 0x20,                     //Only casts the spell if the target does not have an aura from the spell
 };
 
 // one line in DB is one event