SEASON FINALE: Say it ain’t so, Joe! I was just feeling merry, Larry! But tonight is, indeed, the finale for this long-awaited return season of Curb Your Enthusiasm. Will it end with a full-blown musical production of “Fatwa!,” with Lin-Manuel Miranda as the star? With Larry’s ex-wife, Cheryl, riding off into the sunset with Ted Danson? Or, as usual with Larry David’s superbly constructed comedies, with an ending that only he can see coming?