Washington — The Supreme Court on Friday said it will take up this term a legal battle over a Texas law that bans most abortions after about six weeks of pregnancy, adding a second case involving abortion to its docket in what is already a blockbuster term. The abortion ban, known as S.B. 8, will remain in place while the Supreme Court considers the cases. In a pair of orders, the court set oral arguments in a challenge brought by the Justice Department and a separate case brought by abortion providers in Texas for November 1.  The question to be