HONG KONG — China ’s economy accelerated in the first quarter of this year, expanding 5% from a year earlier as it largely shrugged off impacts from the Iran war so far, according to data released Thursday. The January-March data released by the government, covering a period during which the Iran war began, was better than what economists expected and was up from the 4.5% growth seen in the October-December quarter. Economists expect China to be able to weather short-term impacts from the Iran