On Season 12 of “The Great British Bake Off” there’s a good bit of pot stirring — and it’s more than just batter. The smash hit family show features a variety of contestant whisking towards the finish line — but the last thing viewers of the UK Channel 4 and Netflix series expect is drama, aside from the occasional undercooked cake or crumpet. However, judge Prue Leith has caused a stir online after saying the decadent desserts are “worth every calorie.” Social media watchdogs are now accusing the 84-year-old South African chef-restaurateur of repeatedly making “toxic” comments that are “triggering”...