WASHINGTON — A closely watched voting rights dispute from Arizona is among five cases standing between the Supreme Court and its summer break. But even before the justices wrap up their work, likely later this week, they could say whether they’ll add more high-profile issues to what already promises to be a consequential term, beginning in October.This month, the court has already issued big decisions on health care and religious freedom. And next term, the high court has agreed to take on cases about abortion and guns …