A Filipino domestic helper is facing a jail sentence after she was found guilty on Thursday of pinching and pulling the hair of a young Hong Kong boy in her care.But Kowloon City Court cleared Angela Villamer Vivo, 38, of three other charges alleging she kicked the child in his stomach, and rubbed his genitals on multiple occasions over the course of two years.The boy, who cannot be identified for legal reasons, had previously told investigators that Vivo began assaulting him after pulling his…