Fallout from the collapse of U.S. lenders Silicon Valley Bank SIVB.O and Signature Bank SBNY.Owidened overnight, despite government efforts to shore up confidence. SINGAPORE, March 14 (Reuters) - Asia's share markets slid on Tuesday, with Japan's financial stocks leading losses as fear of a U.S. banking crisis gripped investors ahead of crucial inflation data due later in the day. Heavy selling hit U.S. regional bank stocks and traders raced headlong from bets on U.S. rate hikes, reckoning the Fed would now be thinking twice.