Locked-down factory workers at an Apple supplier in Shanghai stormed a dormitory housing company management in protest against their captivity, regional media reported. Taiwan-based Quanta Computer, which makes MacBooks and other computers at a factory in Shanghai, sealed employees in worksite dormitories when the city entered Covid-19 lockdown in April. Since then, workers have been banned from leaving their dorms and seeing friends and family. A dispute over their captivity and pay prompted a large group of Quanta workers to last weekend storm a dormitory housing the company’s Taiwanese managers, resulting in a lengthy standoff, according to regional media. Some…