By Kate Abnett BRUSSELS (Reuters) -EU companies may be able to work around Russia’s demand to receive gas payments in roubles without breaching sanctions if they pay in euros or dollars which are then converted into the Russian currency, the European Commission said on Friday. The companies would also need to seek additional conditions on the transactions, such as a statement that they consider their contractual obligations complete once they have deposited the non-Russian currencies. Moscow has warned Europe it risks having gas supplies cut unless it pays in roubles. In March it issued a decr…