“Have Yourself a Movie Little Christmas” a decade ago — and bemoaned the lack of LGBT stories being told in the seasonal sub-genre — I never could have predicted the bumper crop of 2020, which is offering queer-centric (or at least gay-inclusive) new movies from Lifetime, Hallmark, Paramount Network, and Netflix, as well as the arrival of “Happiest Season,” an all-star Christmas comedy with a major studio behind it. (Sony was set to release the film, until it moved to Hulu in the wake of widespread theater closures.)“Happiest Season” isn’t the kind of “inclusive” movie where someone went through a heterosexual script with the find-replace function and changed the gender of one of the leads; this is a film in which identity, family, and the.