Case T-796/19: Judgment of the General Court of 21 December 2021 — HB v Commission (Public service contracts — Provision of technical assistance services to the Ukrainian authorities — Decision to reduce the amount of the contract and to recover the amounts already paid — Action for annulment and for damages — Act forming part of a purely contractual framework from which it is inseparable — No arbitration clause — Inadmissibility — No heads of damage that are separable from the contract)