WASHINGTON — The Senate confirmed Ketanji Brown Jackson to the Supreme Court on Thursday, shattering a historic barrier by securing her place as the first Black female justice and giving President Joe Biden a bipartisan endorsement for his effort to diversify the court.Jackson, a 51 year-old appeals court judge with nine years experience on the federal bench, was confirmed 53-47, mostly along party lines but with three Republican votes. Presiding was Vice President Kamala Harris, also the first Black woman to reach …