Broadway veteran Angela Reed, who is appearing in ‘Harry Potter and the Cursed Child’ originated a key role in the play that inspired ‘The Whale.’ Todd Cerveris Littleton native Angela Reed, who won a True West Award for originating one of the key roles in the world-premiere staging of “The Whale” at the Denver Center in 2012, is thrilled to see the Samuel D. Hunter play now opening as an Oscar-buzz film a full decade later. In fact, she’s watching Hunter’s dog, Squire, while he’s out in the world and promoting the film. OK, this is going to take some explaining. “The Whale,” starring Brendan Fraser, is about a housebound…