fix(Core/Threat): Melee creatures should only target units they can attack when rooted (#24526)

src/server/game/Combat/ThreatMgr.cpp

@@ -468,6 +468,9 @@ bool ThreatContainer::IsPreferredTarget(Creature* attacker, Unit* target) const
     if (target->HasAuraTypeWithCaster(SPELL_AURA_IGNORED, attacker->GetGUID()))
         return false;
 
+    if (attacker->HasUnitState(UNIT_STATE_ROOT) && attacker->IsCombatMovementAllowed() && !attacker->IsWithinMeleeRange(target))
+        return false;
+
     return true;
 }
 

src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_ragnaros.cpp

@@ -254,6 +254,7 @@ public:
 
         bool CanAIAttack(Unit const* victim) const override
         {
+            // Used for Magma Blast handling to force EnterEvadeMode if there are no melee targets
             return me->IsWithinMeleeRange(victim);
         }
 

src/server/scripts/Outland/Auchindoun/ShadowLabyrinth/boss_murmur.cpp

@@ -85,11 +85,6 @@ struct boss_murmur : public BossAI
         }, 3600ms, 10900ms, GROUP_OOC_CAST);
     }
 
-    bool CanAIAttack(Unit const* victim) const override
-    {
-        return me->IsWithinMeleeRange(victim);
-    }
-
     void EnterEvadeMode(EvadeReason why) override
     {
         if (me->GetThreatMgr().GetThreatList().empty())