I just checked. The Schengen Area has the chocolate letters. They are not available at the "Chocolade" shop though but at the "Delicatessen" shop right next to it.

If you are coming from the B or C gates heading to the non-Schengen Area do not turn right to passport control and the escalator to the Crown Lounge 25 but go left instead. If you head to the security checks for the Schengen passengers coming in from landside the "Delicatessen" shop is to your right. Second or third one.