By Rene Wagner and Nadine Schimroszik BERLIN (Reuters) – European companies are suffering yet more strain on supply chains already snarled up by the coronavirus pandemic as the conflict in Ukraine leads to growing shortages of key components, they warned on Wednesday. The new snags pose a further threat to economic recovery in Europe, potentially prolonging existing bottlenecks that in some sectors were not expected to clear until next year. The conflict has added to the trade chaos that followed the global economy’s emergence from pandemic lockdowns. Asia-Europe routes have been worst hit by …