SEATTLE — For better or worse, this heat wave is forcing Washington to recognize and confront the impacts of climate change. Last year’s “heat dome,” while jarring and traumatic for many, was an exceptional event. Earlier this week, King County officials warned that wildfires near Seattle, once thought impossible, are a growing threat. While that would be rare, projections say this heat wave is anything but. As the city endures — or even celebrates — several days at or above 90 degrees that could stretch into the weekend, these deviations from the region’s mild summers are predicted to become …