Cineworld Group, the owner of Regal Cinemas, will begin reopening movie theaters next week following a three-month shutdown due to the coronavirus pandemic.The company said in a statement Tuesday that it was planning to open all its theaters by July 10, with screenings of “Mulan,” “Wonder Woman 1984” and director Christopher Nolan’s new film “Tenet” on the upcoming slate.Shares in the company gained as much