By Daniel Chavkin The Mavericks legend had some fun with the current Dallas star. View the original article to see embedded media. As Luka Dončić was playing for Slovenia in a World Cup qualifier vs. Sweden, the crowd started an “overrated” chant at him during the game. The jeering crowd included a familiar face, someone who Dončić probably views as a friend or even mentor. That would be Dirk Nowitzki. Very clearly, Nowitzki was having some fun with his friend, which became even more clear before the game began. As Nowitzki was walking to his seat, Dončić found him in the hallway and gave him …