“Endgame: Inside the Royal Family and the Monarchy’s Fight for Survival” — out Nov. 28 — detailed how Harry and William, the heir to the throne, feuded as their late grandmother, Queen Elizabeth II, was taking her final breaths.Palace insiders tore into Scobie’s claims that William “ignored” his brother’s desperate calls as he raced to be at the Queen’s bedside in Balmoral last September.“It appears no matter what happens behind closed doors, even in a time of such pain and grief, that where the royal family are concerned it will one day emerge,” a royal insider told the Mirror.“Nothing is off limits with William and Kate appearing to be this author’s number one target.