BERLIN—The German government on Wednesday cut its growth forecast for this year, but said that Europe’s biggest economy remains “robust” and will return to its pre-pandemic size in 2022. The Economy Ministry predicted that gross domestic product will grow by 3.6 percent, down from the 4.1 percent Germany’s previous government forecast in late October. The picture has been clouded since then by a steep new wave of coronavirus infections fueled by the highly contagious omicron variant. GDP grew 2.7 percent last year, according to preliminary official figures, rebounding from a plunge of 4.6 percent in 2020 when pandemic lockdowns were at their most severe. The government said this year’s projected growth will bring it back to its pre-crisis size. “The consequences of the corona pandemic are still noticeable and many companies still have to struggle with them,” Economy Minister Robert Habeck said in a statement. “Nevertheless, our economy is still …