WASHINGTON — Supreme Court justices’ annual reports on investments, paid travel and other financial matters remain shielded from public view more than five weeks after they were filed.For the first time since John G. Roberts Jr. became chief justice in 2005, the justices probably will leave town for their summer break before the reports are released.The Administrative Office of U.S. Courts, the central repository for federal judges’ disclosure forms, has offered no explanation and has yet to set a date …