Princess Anne is widely considered to be the hardest-working member of the royal family, tirelessly representing the monarchy on the world stage. However, the Princess Royal, 75, is said to be furious that her latest official engagement was wiped from the headlines by her nephew, Prince Harry. New Idea understands that Anne is fuming over Harry’s sudden announcement that the 2029 Invictus Games will be held in South Korea – a reveal made just da…