Prince William was expected to take an extended break from royal duties after Kate Middleton’s surgery, but after King Charles announced he has cancer, the Prince of Wales will now return to his role and take on a greater responsibility. Charles will step away from public engagements for now, and the Princess of Wales’ medical leave won’t end until the spring, making William a key figure within the monarchy. Royal biographer Robert Hardman revealed there is an “enormous demand” placed on the Prince of Wales, and he will be seen as the “outward-facing leader of the monarchy.” The father-of-thre…