FRANKFURT—Euro zone inflation may fall more slowly than earlier thought, partly on persistent supply chain bottlenecks, but the European Central must not overreact by removing stimulus too quickly, two ECB policymakers said on Friday. Inflation shot above 4 percent last month, more than twice the ECB’s 2 percent target, on soaring energy prices and industrial supply chain bottlenecks that are now proving to be bigger problems than thought even just a few weeks ago. Finnish central bank chief Olli Rehn and Lithuania’s Gediminas Simkus both suggested that these inflationary pressures could last longer but maintained the ECB’s view that the price surge is temporary so they pushed back on suggestions for policy tightening. “Euro area inflation is still mostly transitory even though some of its components are more persistent than previous expected,” Rehn told a Lithuanian conference. Supply chain bottlenecks are one of the factors that are proving to be …