WASHINGTON — Less than 24 hours after the unprecedented leak of the draft opinion that overturned Roe v. Wade, Chief Justice John Roberts ordered an investigation into the “egregious breach.”Since then? Silence.The Supreme Court won’t say whether it’s still investigating.The court also won’t say whether the leaker has been identified or whether anyone has been disciplined.Or whether an outside law firm or the FBI has been called in.Or whether the court will ever offer an accounting of …