CINCINNATI — Shota Imanaga gave up another home run Friday night. It’s nothing new. The Cubs’ lefty starter has allowed 22 homers, more than all but one pitcher in baseball this season. He’s been unable to shake that bad habit, bringing up memories of how costly his home-run problem was last postseason, when he allowed three long balls in just 6⅔ innings of playoff work against the Padres and Brewers. For now, the Cubs will choose to look at the positives Imanaga has delivered for an ailing pitc