Rose Leslie supports her husband Kit Harington’s sobriety but says she won’t mother her former “Game of Thrones” co-star to keep him on the wagon. “For Kit, being an addict, it’s very important for him to recognize himself as such,” the Scottish actress, 35, told Harper’s Bazaar UK for its June cover story. “The AA community has provided such a loving space for him to feel heard, to make sure he’s not alone. But if it weren’t for rehab, he would be in a very different headspace right now.” Harington, who’s also 35 and starred as Jon Snow on the HBO series, opened up to The Sunday Times last ye…