Core/Objects: Keep current WMO info on position updates and use it in party member state packets

Port From (https://github.com/TrinityCore/TrinityCore/commit/d397b636d48f55b5e76d77c36ded33b2c8bbe295)

Source/Game/Entities/Object/WorldObject.cs

@@ -120,6 +120,7 @@ namespace Game.Entities
             m_outdoors = data.outdoors;
             m_staticFloorZ = data.FloorZ;
             m_liquidStatus = data.LiquidStatus;
+            m_currentWmo = data.wmoLocation;
         }
 
         public virtual void BuildCreateUpdateBlockForPlayer(UpdateData data, Player target)
@@ -1080,6 +1081,8 @@ namespace Game.Entities
 
         public ZLiquidStatus GetLiquidStatus() { return m_liquidStatus; }
 
+        public WmoLocation GetCurrentWmo() { return m_currentWmo; }
+
         public bool IsInWorldPvpZone()
         {
             switch (GetZoneId())
@@ -3804,6 +3807,7 @@ namespace Game.Entities
         float m_staticFloorZ;
         bool m_outdoors;
         ZLiquidStatus m_liquidStatus;
+        WmoLocation m_currentWmo;
 
         // Event handler
         public EventSystem m_Events = new();

Source/Game/Networking/Packets/PartyPackets.cs

@@ -280,8 +280,13 @@ namespace Game.Networking.Packets
             MemberStats.SpecID = (ushort)player.GetPrimarySpecialization();
             MemberStats.PartyType[0] = player.m_playerData.PartyType[0];
             MemberStats.PartyType[1] = player.m_playerData.PartyType[1];
-            MemberStats.WmoGroupID = 0;
-            MemberStats.WmoDoodadPlacementID = 0;
+
+            var wmoLocation = player.GetCurrentWmo();
+            if (wmoLocation != null)
+            {
+                MemberStats.WmoGroupID = (ushort)wmoLocation.GroupId;
+                MemberStats.WmoDoodadPlacementID = wmoLocation.UniqueId;
+            }
 
             // Vehicle
             Vehicle vehicle = player.GetVehicle();