Wealthy shoppers have flocked to Walmart in greater numbers, helping the nation’s largest retailer overcome inflation headwinds faced by rivals and fuel better-than-expected quarterly results, the company said Thursday.Walmart said total US comparable sales rose 3.8% in its first quarter ended April 30 — with the bulk of the gains coming from households with an income of $100,000 or more.“We are seeing customers trade into Walmart,” Chief Financial Officer John David Rainey told Bloomberg.“We’ve historicall ...