Core/Objects: Initialize position data and zone/instance script for all worldobject types (except player)

Port From (https://github.com/TrinityCore/TrinityCore/commit/fddd6cdf3fb342b98d4878d23874f60498d7545a)

Source/Game/Entities/Corpse.cs

@@ -89,6 +89,9 @@ namespace Game.Entities
 
             PhasingHandler.InheritPhaseShift(this, owner);
 
+            UpdatePositionData();
+            SetZoneScript();
+
             return true;
         }