Japanese filmmaker Hayao Miyazaki took home the Academy Award for best animated feature Sunday night for “The Boy and the Heron,” maintaining his spot as the only Asian director to ever triumph in the category. Miyazaki, 83, a legendary animator known for co-founding Studio Ghibli, won in 2002 for his film “Spirited Away.” He won his first Golden Globe this year for “The Boy and the Heron,” which topped the North American box office when it was released in December and grossed $168 million worldwide.The film, partly based on Miyazaki’s childhood, follows a 12-year-old boy…