Chris Willman Music WriterThis may still come as a surprise to oldsters, but the young people do love their vinyl now — even contemporaries of 18-year-old Olivia Rodrigo, whose debut album returns to the No. 1 spot on the chart this week due partly to a belated LP-format release.Rodrigo’s “Sour” tops the Rolling Stone album chart with 99,200 album-equivalent units.