Didi Global Inc.’s net loss grew in the March quarter, after climbing marketing costs and losses on its stake in electric vehicle-maker XPeng Inc. outweighed a revenue boost.China’s leading ride-hailing provider’s net loss grew to 1.35 billion yuan ($186 million) in the first three months of the year, reversing two straight quarters of profitability despite a 15% rise in sales. Didi’s net loss was 1.16 billion yuan a year ago....