WASHINGTON — The giant annual spending bill unveiled by Congress on Tuesday contains more than $44 billion in emergency aid for Ukraine, renewing the U.S. commitment to the country’s defense as Russia’s invasion grinds toward a second year.The new wave of aid for Ukraine — billions more than President Biden requested in mid-November — comes amid growing concerns among the country’s backers about the depth of America’s support. Some Republicans have questioned the massive spending, while some progressives have called for peace talks.