Queen Camilla is “pleased” that King Charles has cancelled a major engagement abroad, according to inside sources. The King, 75, is set to miss Cop29 next month amid the monarch’s ongoing cancer treatment. The monarch is known for being a lifelong environmentalist, and organisers of the 29th United Nations Climate Change Conference had hoped he would be able to attend the event in Azerbaijan. It is understood the Government decided not to ask King Charles to represent the country this year. Sources told The Mirror that No10 felt “an abundance of caution” was needed given the monarch’s current …