By Martin Baccardax GE said Friday that the “magnitude” of supply chain and cost challenges could pressure its near-term profit forecasts. General Electric (GE) – Get General Electric Company Report shares extended declines Friday after the industrial group said it expects supply chain and cost pressures to last into at least the second half of the year. GE said that, while the pressures were included in the group’s overall profit guidance, published late last month, “the magnitude of these challenges likely present pressure to overall growth, profit and free cash flow through the first quarte…