fix(Core/Unit): Keep Lightwell alive on player death (#24675)

src/server/game/Entities/Totem/Totem.cpp

@@ -34,12 +34,20 @@ Totem::Totem(SummonPropertiesEntry const* properties, ObjectGuid owner) : Minion
 void Totem::Update(uint32 time)
 {
     Unit* owner = GetOwner();
-    if (!owner || !owner->IsAlive() || !IsAlive() || m_duration <= time)
+
+    if (!owner || !IsAlive() || m_duration <= time)
     {
         UnSummon();                                         // remove self
         return;
     }
 
+    // If owner is dead and this is not a lightwell, despawn
+    if (!owner->IsAlive() && !(m_Properties && m_Properties->Type == SUMMON_TYPE_LIGHTWELL))
+    {
+        UnSummon();
+        return;
+    }
+
     m_duration -= time;
     Creature::Update(time);
 }

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

@@ -8077,24 +8077,36 @@ void Unit::RemoveAllControlled(bool onDeath /*= false*/)
     if (IsPlayer())
         ToPlayer()->StopCastingCharm();
 
-    while (!m_Controlled.empty())
+    for (auto it = m_Controlled.begin(); it != m_Controlled.end();)
     {
-        Unit* target = *m_Controlled.begin();
-        m_Controlled.erase(m_Controlled.begin());
+        Unit* target = *it;
+
         if (target->GetCharmerGUID() == GetGUID())
         {
+            it = m_Controlled.erase(it);
             target->RemoveCharmAuras();
         }
         else if (target->GetOwnerGUID() == GetGUID() && target->IsSummon())
         {
+            // Keep Lightwell alive on owner death
+            if (onDeath)
+                if (TempSummon* ts = target->ToTempSummon())
+                    if (ts->m_Properties && ts->m_Properties->Type == SUMMON_TYPE_LIGHTWELL)
+                    {
+                        ++it;
+                        continue;
+                    }
+
             if (!(onDeath && !IsPlayer() && target->IsGuardian()))
             {
                 target->ToTempSummon()->UnSummon();
+                it = m_Controlled.erase(it);
             }
         }
         else
         {
             LOG_ERROR("entities.unit", "Unit {} is trying to release unit {} which is neither charmed nor owned by it", GetEntry(), target->GetEntry());
+            ++it;
         }
     }
 }