BEIJING—Global stock markets rose Wednesday with markets optimistic that the Omicron coronavirus variant would only have a limited economic fallout. Shanghai, Frankfurt, Tokyo, and Hong Kong advanced. London opened lower. Wall Street rose after President Joe Biden announced Tuesday the government will provide rapid-test kits and increase vaccination efforts but gave no indication of plans for restrictions that might disrupt the economy. Other governments in Asia and Europe have tightened travel controls or pushed back plans to relax curbs already in place. In early trading, the FTSE 100 in London was off 0.2 percent at 7,286.79 while Frankfurt’s DAX added 1.4 percent to 15,447.44. The CAC 40 in Paris rose 1.4 percent to 6,964.99. On Wall Street, the future for the benchmark S&P 500 index was off less than 0.1 percent. That for the Dow Jones Industrial Average was up less than 0.1 percent. On Tuesday, the S&P 500 rose …