Prince Harry’s Spare broke records upon its release in January 2023 before being given away by hotels six months later. But one salacious tidbit in the tome still reverberates throughout palace walls, and it involves Prince William. In the autobiography, the Duke of Sussex accused the then-Duke of Cambridge of throwing him to the floor during a 2019 argument that revolved around Meghan Markle. He also spilled how it was William and Kate Middleton who convinced him to wear a Nazi uniform to a party in 2005 — both allegedly laughed at the then 20-year-old prince once the image of him donning the…