James Middleton, 37, has become a royal talking point lately thanks to his “touching” new book Meet Ella: The Dog Who Saved My Life. But Kate, Princess of Wales,’ 42, brother is also reportedly helping “heal” the damage Prince Harry, 40, caused when he “betrayed” Prince William, 42, by publishing his “incendiary” memoir Spare. This news led royal biographer Claudia Josephs to tell a publication, “I imagine that William finds it a huge solace that he is so close to the Middleton family as his relationship with his own brother Harry has become so fractured.” She added, “From the moment that he b…