refactor(Core/AI): Some more refactoring prep for Comat Threat system… (#15026)

Co-authored-by: Treeston <14020072+Treeston@users.noreply.github.com>

src/server/scripts/Events/hallows_end.cpp

@@ -28,7 +28,7 @@
 #include "SpellScript.h"
 #include "TaskScheduler.h"
 
-// @todo: this import is not necessary for compilation and marked as unused by the IDE
+/// @todo: this import is not necessary for compilation and marked as unused by the IDE
 //  however, for some reasons removing it would cause a damn linking issue
 //  there is probably some underlying problem with imports which should properly addressed
 //  see: https://github.com/azerothcore/azerothcore-wotlk/issues/9766
@@ -598,7 +598,7 @@ struct npc_hallows_end_soh : public ScriptedAI
     int32 pos;
     TaskScheduler scheduler;
 
-    void EnterCombat(Unit*) override
+    void JustEngagedWith(Unit*) override
     {
         scheduler.Schedule(6s, [this](TaskContext context)
         {
@@ -1082,7 +1082,7 @@ struct boss_headless_horseman : public ScriptedAI
 
     Player* GetRhymePlayer() { return playerGUID ? ObjectAccessor::GetPlayer(*me, playerGUID) : nullptr; }
 
-    void EnterCombat(Unit*) override { me->SetInCombatWithZone(); }
+    void JustEngagedWith(Unit*) override { me->SetInCombatWithZone(); }
     void MoveInLineOfSight(Unit*  /*who*/) override {}
 
     void DamageTaken(Unit*, uint32& damage, DamageEffectType, SpellSchoolMask) override