headerBackground​ Blur Snack missing dependencies

[espipj]

Seems that the snack referenced in this section is missing the expo-blur dependency... I'm happy to help to fix this but I can't see where these dependencies are set... i.e: https://github.com/react-navigation/react-navigation.github.io/blob/main/static/examples/6.x/header-blur.js file for the snack