By Paul Sandle LONDON (Reuters) – Britain’s Co-operative Group warned of “stark” economic headwinds, with rising inflation causing more challenges for the supermarkets-to-funerals provider this year after supply-chain disruptions hurt its profit in 2021. The member-owned group had to battle industry-wide supply-chain problems in the second half of 2021 as it was upgrading systems in its grocery business, Britain’s seventh biggest. Interim Chief Executive Shirine Khoury-Haq said the disruption cost around 61 million pounds ($80 million), including the impacts of weather and driver shortages. As…