WASHINGTON — Democratic Sen. Ben Ray Luján, who is recovering from a stroke in January, says he plans to be back at work in “just a few short weeks” to vote on President Joe Biden’s forthcoming Supreme Court nominee.In a video released Sunday by his office, the New Mexico senator said he is at the University of New Mexico Hospital after surgery to relieve pressure on his brain and soon will go to an inpatient rehabilitation facility for “a few more weeks.”“I’m doing well. I …