Commission Delegated Regulation amending the regulatory technical standards laid down in Delegated Regulation (EU) 2022/2059, Delegated Regulation (EU) 2022/2060 and Delegated Regulation (EU) 2023/1577 as regards the technical details of back-testing and profit and loss attribution requirements, the criteria for assessing the modellability of risk factors, and the treatment of foreign-exchange risk and commodity risk in the non-trading book