By Kirstin Ridley LONDON (Reuters) -KPMG has been sued for 1.3 billion pounds ($1.77 billion) by the liquidators of Carillion for missing “red flags” during audits of the construction giant, in one of the largest claims against one of the world’s top accountants. Britain’s Official Receiver, part of the Insolvency Service, which is liquidating the former blue-chip group, alleged that negligent failures by KPMG to detect misstatements in the accounts of Carillion – which collapsed in 2018 under 7 billion pounds of debt – cost claimants “extensive loss and damage”. KPMG said it believed the laws…