Commission Implementing Decision (EU) 2026/2253 of 12 October 2026 laying down rules for the application of Directive (EU) 2016/797 of the European Parliament and of the Council as regards a request from Poland not to apply the requirement to install GSM-R in a tunnel set out in Commission Regulation (EU) No 1303/2014 (notified under document C(2026) 7077)