Though published just five years ago, North Carolina author Mason Deaver’s debut novel “ I Wish You All The Best ” is already a frequent presence on banned-book lists, as its affirming portrait of a teen’s emerging nonbinary identity seems readymade for modern culture-war scolds. Otherwise, it’s been very well received — as should be Tommy Dorfman ’s film adaptation, the writer-director’s first feature.  The pleasant, polished drama provides a compassionate take on a high schooler undergoing