Core/Spells: Implemented SummonPropertiesFlags::UseDemonTimeout

Closes TrinityCore#29930

Author: Shauren

src/server/game/DataStores/DBCEnums.h

@@ -2110,7 +2110,7 @@ enum class SummonPropertiesFlags : uint32
     DespawnOnSummonerDeath            = 0x00000008, // NYI
     OnlyVisibleToSummoner             = 0x00000010,
     CannotDismissPet                  = 0x00000020, // NYI
-    UseDemonTimeout                   = 0x00000040, // NYI
+    UseDemonTimeout                   = 0x00000040,
     UnlimitedSummons                  = 0x00000080, // NYI
     UseCreatureLevel                  = 0x00000100,
     JoinSummonerSpawnGroup            = 0x00000200, // NYI

src/server/game/Entities/Creature/TemporarySummon.cpp

@@ -193,7 +193,14 @@ void TempSummon::InitStats(WorldObject* summoner, Milliseconds duration)
     m_lifetime = duration;
 
     if (m_type == TEMPSUMMON_MANUAL_DESPAWN)
-        m_type = (duration <= 0ms) ? TEMPSUMMON_DEAD_DESPAWN : TEMPSUMMON_TIMED_DESPAWN;
+    {
+        if (duration <= 0s)
+            m_type = TEMPSUMMON_DEAD_DESPAWN;
+        else if (m_Properties && m_Properties->GetFlags().HasFlag(SummonPropertiesFlags::UseDemonTimeout))
+            m_type = TEMPSUMMON_TIMED_DESPAWN_OUT_OF_COMBAT;
+        else
+            m_type = TEMPSUMMON_TIMED_DESPAWN;
+    }
 
     if (summoner && summoner->IsPlayer())
     {