By Corina Pons ARTEIXO, Spain (Reuters) -Sales at Zara owner Inditex surged above pre-pandemic levels at the start of its financial year, though the world’s No.1 fast fashion retailer by sales faces a fresh challenge in the months ahead after it stopped trading in Russia. Inditex shares tumbled on March 5 after the company closed its 502 shops in Russia and halted online sales there after the country’s invasion of Ukraine and the imposition of Western sanctions. Russia and Ukraine accounted for 5% of its sales growth from Feb. 1 to March 13. “Our objective is to resume operations in Russia and…