SYDNEY — Fox Corp. chief executive Lachlan Murdoch is suing Australian news website Crikey in a Sydney court for defamation over an opinion piece about last year’s storming of the U.S. Capitol.Media mogul Rupert Murdoch’s son filed a statement of claim in the Federal Court on Tuesday, a day after Crikey publisher Private Media's chairman Eric Beecher and managing editor Peter Fray put their names to an ad in The New York Times inviting Lachlan Murdoch to sue.“We await your writ so that we can …