One week after “Motherless Brooklyn” disappointed the box office, Warner Bros. has yet another flop in the form of “Doctor Sleep.” The Mike Flanagan-directed horror film based on Stephen King’s “The Shining” sequel was tracking for a debut in the $25 million range, but its opening weekend came in well below that mark with a dismal $14 million total. While “Doctor Sleep’s” $50 million production is a saving grace, Deadline reports the film is expected to lose between $20 million and $30 million for Warner Bros. “Doctor Sleep” now joins “The Goldfinch,” “Gemini Man,” and “Terminator: Dark Fate” as one...