By Francesco Guarascio BRUSSELS (Reuters) – Hungary and Austria questioned an EU decision to blacklist two Russian oligarchs but eventually accepted the move after pressure from other governments, European Union diplomats and officials said. The EU adopted a new package of sanctions against Russia last Friday over its invasion of Ukraine, including the blacklisting of oligarchs close to the Kremlin, among them Moshe Kantor and German Gref. Hungary and Austria enjoyed relatively cordial relations with Russia before the invasion, and their concerns about blacklisting Kantor and Gref underlines t…