WASHINGTON -- One of House Speaker Nancy Pelosi's top lieutenants demanded yesterday that Rep. Charles Rangel quickly settle the swirling ethics charges against him rather than face a trial tomorrow that could embarrass Democratic candidates across the country -- but the disgraced pol isn't going without a fight. "I think it's best that he settle," Rep. George Miller, an influential California Democrat who helped engineer Pelosi's rise to power, told The Post. "Because I just said so, that's why. That's my feeling," he added. Amid mounting pressure on Rangel, Miller's blunt statement is the most direct message from any member...