Caltrans has blocked the town of Woodside’s attempt to build 200 units of affordable housing on land it owns near I-280 because it would endanger a rare wildflower. Three years ago, Woodside made headlines around the world for claiming it couldn’t build public housing because the town was the habitat for endangered mountain lions. Woodside hastily dropped the idea after receiving a threatening letter from state Attorney General Rob Bonta. Now Wo…