By Francois Murphy VIENNA (Reuters) – China clashed with the countries in the so-called AUKUS alliance at the U.N. nuclear watchdog on Friday over their plan to supply Australia with nuclear-powered submarines, capping a week in which Beijing has repeatedly railed against the project. Under the alliance between Washington, London and Canberra announced last year Australia plans to acquire at least eight nuclear submarines that International Atomic Energy Agency chief Rafael Grossi has said will be fuelled by “very highly enriched uranium”, suggesting it could be weapons-grade or close to it. T…