Tesla Inc temporarily halted some operations at its factory in Shanghai last month as a global shortage of semiconductors hit the electric vehicle pioneer in one of its most important markets, people familiar with the matter said. Part of a production line at the China plant was halted for about four days because of a lack of key chips, the people said, asking not to be identified because the details are private. One particular shortage had to do with the availability of electronic control units, small devices that control one or several electrical systems in a vehicle, one of the...