By David Morgan and Richard Cowan WASHINGTON (Reuters) – Lawmakers in the U.S. Congress on Tuesday appeared to be within hours of releasing legislation to provide billions of dollars in emergency aid to Ukraine, as well as money to fund the government through Sept. 30 and address COVID-19. Legislation providing $1.5 trillion for defense and nondefense discretionary spending and roughly $12 billion to help Ukraine respond to Russia’s invasion headed toward release after Democrats agreed to lower their COVID-19 request to around $15 billion, down from the White House’s initial $22.5 billion requ…