If you’ve been trapped indoors with your significant other for what seems like an eternity, your secret schadenfreudian self may take some satisfaction in “The Lovebirds.” Let some other couple sling barbs at each other for a change.The tenets of team-building dictate that working towards a common goal and exposing one’s vulnerabilities builds trust.What kind of caper could possibly beget more vulnerability or require more trust than running from the law and a bunch of bad guys at the same time? There you have “The …