Case T-310/21: Judgment of the General Court of 25 March 2026 – Air Canada v Commission (Non-contractual liability – Competition – Agreements, decisions and concerted practices – Market for airfreight – Reduction of the fine by the General Court – Refusal of the Commission to pay interest on the overpayment – Limitation period – Starting point of the limitation period – Interruption – Admissibility – Concept of interest