A shopper wearing a face mask due to the coronavirus disease (COVID-19) pandemic browses toys at a Target store in King of Prussia, Pennsylvania, November 20, 2020. Mark Makela | Reuters Even from the porch of his home in Malibu, toy executive Isaac Larian can’t escape this holiday season’s biggest business challenge. He can see a long line of container ships idle at the Port of Los Angeles, about 70 miles away. Larian, CEO of MGA Entertainment, said the congested port has been a persistent view off the California coast since at least May. As he tries to relax and watch the sunset, it’s a constant reminder of the many toys…