Of course, we’ve all rolled our eyes in Miranda Priestly fashion at the reports of why it’s taking so long for David Frankel to come up with a sequel to his 2006 classic workplace dramedy, The Devil Wears Prada — “By all means, move at a glacial pace. You know how that thrills me.” Or strut away in our imaginary blood-red Rockstud Pumps at the cast’s excuse of the makers not being able to crack a script — “Details of your incompetence don’t interest me.” But after watching The Devil Wears Prada 2 , I realized why there was wisdom in waiting. The sequel lacks the relentless verve of the first part, but that’s by design. Because like the memorable characters from the first film, the world of journalism has also come of age. The Devil Wears Prada 2’s head isn’t buried in the sand, but it has its ear kept to the ground. Had it released a decade earlier, it could’ve been another tone-deaf follow-up riding solely on nostalgia.…