TOKYO—Japan’s economic rebound was softer than initial estimates in the final quarter of 2021, revised data showed on Wednesday, as the pickup seen in consumer and business spending was weaker than first reported. The downwardly revised growth is bad news for policymakers tasked with keeping the country’s fragile recovery on track as a jump in commodity prices due to the Ukraine crisis and persistent supply disruptions heighten economic uncertainty. Revised gross domestic product (GDP) data released by the Cabinet Office on Wednesday showed Japan expanded an annualized 4.6 percent in October-December. That was lower than economists’ median forecast for a 5.6 percent gain and the preliminary reading of 5.4 percent released last month. “This suggests that Japan’s economic recovery from the pandemic is weaker than that of Europe and the United States,” said Takeshi Minami, chief economist at Norinchukin Research Institute. On a quarter-on-quarter basis, GDP expanded 1.1 percent, falling …