‘BLACK PANTHER: WAKANDA FOREVER’ Rated PG-13 for sequences of strong violence, action and some language. What it’s about: The sequel to “Black Panther” takes on the world without T’Challa, and Chadwick Boseman, introducing new heroes, new villains and some who straddle the line. The kid attractor factor: It’s a big superhero Marvel movie — kids will be excited for the big screen spectacle and heroes on screen. Good lessons/bad lessons: Science and spirituality go hand in hand. You have to learn to grieve in order to let go. Allies should be united against a common goal instead of at odds with …