* Prevent SnackbarList from loading in the editor
* Fix snackbar styles leaking into the editor
* Prevent 'Proceed to Checkout' button being fixed to the bottom in the editor
* add snackbarnotices to notices system
* implement snackbar notices for coupon code ui
* improve styles with mobile styles as well
* some more css fixes
* use native filter
* remove usage of lodash filter and dont’ output container if there are no regular notices
* remove unnecessary duplication of styles
- load default snackbar styles from WordPress components
- override for frontend to make them fixed to the window (including mobile treatement).
* simplify css class generation (save some bytes)
* improve proptypes definition
h/t: @aljullu
* consistent style handle name
* increase bundle size budget