How to add IE EDGE header to all pages (including wp-login)

We need to add `<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">` to our sites as IE11 is defaulting to an older version.

I think this article but the second element in regard to the wp-login page doesn't work…

https://www.itsupportguides.com/knowledge-base/wordpress/wordpress-how-to-add-ie-edge-header-to-all-pages-including-wp-login/