As the tenth (non-spinoff) installment of the “Fast” franchise, “Fast X” has a certain duty to its fans. It needs to up its game from every chapter that came before it. It needs to contain a development so huge, the series will never be the same. It needs to be worthy of having a letter as cool as “X” in its title. Instead what we get is an okay-at-best movie at a point when “okay” is unacceptable.