Core/WorldObject: Properly initialize position data for all types when initially creating them. Fixes some issues with PvP objectives not having the correct area ID set on initialization. Closes #20028.

(cherry picked from commit 28b3469e89)

src/server/game/Entities/GameObject/GameObject.cpp

@@ -258,6 +258,8 @@ bool GameObject::Create(uint32 entry, Map* map, Position const& pos, QuaternionD
         return false;
     }
 
+    UpdatePositionData();
+
     SetZoneScript();
     if (m_zoneScript)
     {