By Nandita Bose WASHINGTON (Reuters) -President Joe Biden was expected on Friday to address the U.S. Supreme Court ruling overturning the landmark 1973 Roe v. Wade abortion rights decision in public remarks at 12.30 p.m. ET (1630 GMT), the White House said. The court ruling was issued just after 10 a.m. ET and left many White House aides scrambling to react because they had expected it to drop next week. Biden’s speech was announced about an hour later. “We were preparing for this to land next week,” a White House source said. Another source told Reuters “no one knew when this would land but t…