By Rory Carroll INGLEWOOD, Calif. (Reuters) – The new SoFi Stadium will get its day in the sun when the $5.5 billion venue hosts the NFL’s championship game on what is forecast to be the hottest ever Super Bowl Sunday. Temperatures are expected to be in the mid-80s and the architects behind the massive “indoor-outdoor” stadium said the conditions would play to its strengths. The stadium’s curved form and aerodynamic canopy was inspired by the Southern California coastline to promote natural cooling, said Lance Evans, HKS director of sports and the architect who led the stadium’s design. “Becau…