Account for these new values in `settings_errors()`, resulting in `notice-warning` and `notice-info` CSS classes.
Map legacy `error` and `updated` CSS classes to `notice-error` and `notice-success`.
Props donmhico, toddhalfpenny, flixos90, desrosj, javorszky, SergeyBiryukov.
Fixes#44640, #44941.
Built from https://develop.svn.wordpress.org/trunk@45814
git-svn-id: http://core.svn.wordpress.org/trunk@45625 1a063a9b-81f0-0310-95a4-ce76da25c4cd
e5deae5e78