Luka Doncic isn't letting his relationship woes stop him from putting a smile on other people's faces -- the Lakers' superstar made a surprise visit at a local hospital alongside LeBron James ... and the kind gesture resulted in some priceless reactions!! Doncic has been going through some tough developments off the court lately -- TMZ Sports broke the story on Tuesday that his fiancée, Anamaria Goltes , filed a petition for child support ... and he confirmed hours later they were no longer