By Jeff Mason WASHINGTON (Reuters) – U.S. President Joe Biden, with flowers in hand, and first lady Jill Biden welcomed the first lady of Ukraine, Olena Zelenska, to the White House on Tuesday for a visit ahead of her address to Congress on Wednesday. Zelenska, the wife of Ukraine President Volodymyr Zelenskiy, embraced Jill Biden and received the flowers from the president, who met her vehicle outside. Afterwards, the two women and delegations from both countries sat down for a meeting in the White House Blue Room. Jill Biden had made a surprise visit to Ukraine, which Russia invaded earlier …