SYDNEY, Australia — A major Australian arts festival has apologized to a Palestinian Australian writer after disinviting her over her remarks endorsing violence against Israel, sparking a controversy that forced the cancellation of this year’s Adelaide Writers’ Week. The Adelaide Festival Board on Thursday retracted the decision to bar academic and novelist Randa Abdel-Fattah, inviting her back for next year’s event and apologizing to her “unreservedly for the harm the Adelaide Festival Corporation has caused her.” The board on Tuesday cancelled the writers’ week, a premier Australian literary event and part of the Adelaide Festival, after 180 international and Australian...