WASHINGTON — In an announcement postponed by the Los Angeles wildfires, President Joe Biden on Tuesday designated two sites in California as national monuments that will honor Native American tribes while shielding picturesque mountains and deserts from mining and energy development. Biden made the designations at an event at the White House, a week after and on the other side of the country from where he’d originally planned to do so with a speech in California’s Eastern Coachella Valley. The president landed in California on January 6 but made it as far as Los Angeles before high winds — which