Mike Leigh movies feel like a magic trick. Observational, wry, funny, devastating and always rooted in character, Leigh allows us to take in some of the most fascinating people, the milieu they inhabit, those around them, their idiosyncrasies in the way they move about the world (cheerfully, as in “Happy-Go-Lucky”; chaotically in “Naked,” to name a few notable examples). Then suddenly, a confession, a conflict, a conversation becomes a revelation, and the whole thing blossoms, unfolding to reveal the tender inner petals of life.