BOSTON — Fidget spinners, a plastic Wonder Woman battle sword and a remote-controlled Spider-Man drone are among the toys topping a consumer safety group’s annual list of worst toys for the holidays. World Against Toys Causing Harm, or WATCH, unveiled the top 10 list Tuesday at a Boston children’s hospital. The nonprofit organization has been releasing the lists for more than four decades. The Toy Association, an industry trade group, dismissed the list as “needlessly frightening” to parents because all toys sold in the U.S. meet “rigorous” safety standards. It also criticized the organization for not testing the toys it focuses on.