Bahrain imposed fresh restrictions on its Shiite community ahead of a major holiday commemoration, the latest in a string of curbs on the community across the Gulf since the US-Iran war. The crackdown emphasizes a point made recently by Semafor’s Gulf editor: The conflict’s most enduring legacy in the region, whose ruling monarchies are Sunni Arab, may be renewed tensions with Shiite populations because of perceived links to Shiite-majority Iran…