fix(Scripts/Karazhan): Fix Temptation target (#17710)

data/sql/updates/pending_db_world/rev_1699998320216999100.sql

@@ -0,0 +1,4 @@
+--
+DELETE FROM `spell_script_names` WHERE `spell_id` = 29494;
+INSERT INTO `spell_script_names` VALUES
+(29494, 'spell_karazhan_temptation');

src/server/game/Entities/Unit/Unit.cpp

@@ -9625,7 +9625,6 @@ bool Unit::HandleProcTriggerSpell(Unit* victim, uint32 damage, AuraEffect* trigg
         // Cast positive spell on enemy target
         case 7099:  // Curse of Mending
         case 39703: // Curse of Mending
-        case 29494: // Temptation
         case 20233: // Improved Lay on Hands (cast on target)
             {
                 target = victim;

src/server/scripts/EasternKingdoms/Karazhan/karazhan.cpp

@@ -34,6 +34,9 @@ EndContentData */
 #include "ScriptedCreature.h"
 #include "ScriptedEscortAI.h"
 #include "ScriptedGossip.h"
+#include "SpellAuras.h"
+#include "SpellAuraEffects.h"
+#include "SpellScript.h"
 
 enum Spells
 {
@@ -585,9 +588,30 @@ public:
     }
 };
 
+class spell_karazhan_temptation : public AuraScript
+{
+    PrepareAuraScript(spell_karazhan_temptation);
+
+    void HandleProc(AuraEffect const* aurEff, ProcEventInfo& eventInfo)
+    {
+        PreventDefaultAction();
+
+        if (eventInfo.GetActionTarget())
+        {
+            GetTarget()->CastSpell(eventInfo.GetActionTarget(), GetSpellInfo()->Effects[aurEff->GetEffIndex()].TriggerSpell, true);
+        }
+    }
+
+    void Register() override
+    {
+        OnEffectProc += AuraEffectProcFn(spell_karazhan_temptation::HandleProc, EFFECT_0, SPELL_AURA_PROC_TRIGGER_SPELL);
+    }
+};
+
 void AddSC_karazhan()
 {
     new npc_barnes();
     new npc_image_of_medivh();
     new at_karazhan_side_entrance();
+    RegisterSpellScript(spell_karazhan_temptation);
 }