PHOENIX — Phoenix Suns owner Mat Ishbia insists he's learned from past mistakes. If Giannis Antetokounmpo trade rumors are true, that will be tested. Antetokounmpo is expected to be prominently shopped this summer after another failed Milwaukee Bucks season. Antetokounmpo, in a dream world, would fit the Suns nicely in terms of what Phoenix is looking for. Size. Length. Star power. Paint presence. Scoring. It's a move kids across the country would make in a NBA 2K game before pushing the Suns to the NBA Finals. That would be a blockbuster deal, something Ishbia himself has done previously with Kevin Durant and Bradley Beal. That experiment failed — miserably — and Ishbia vowed to not make the same mistake twice in terms of roster construction: "I like this team. I like where we're going. I like the direction of the organization. I like the culture that we've built.…