By Andrew Galbraith and David Stanway SHANGHAI (Reuters) -China’s financial hub of Shanghai launched a two-stage lockdown of its 26 million residents on Monday, closing bridges and tunnels and restricting highway traffic in a scramble to contain surging COVID-19 cases. The snap lockdown, announced by the local government late on Sunday, will split China’s most populous city roughly along the Huangpu River for nine days to allow for “staggered” testing by healthcare workers in white hazmat suits. It is the biggest COVID-related disruption to hit Shanghai, and sent prices of commodities includin…