A number ?of ?Chinese brands have cut ties with France soccer captain Kylian Mbappe over comments he reportedly made referring to the late Chinese leader Mao Zedong, underscoring how swiftly international celebrities can come unstuck in a crucial market. In a video that emerged online on Monday, Mbappe is heard saying that the funniest meme he had seen of himself was one where ?his face had been photoshopped on to that of "some guy — I think he's a Chinese dictator".Reuters has not been able to authenticate the video. His comments were believed to be an apparent reference to a…