Popups still uses the mw-ui-icon class. Instead it should be modified to use the Codex markup.
TODO
- Use The cdx-icon CSS version and codex mixin styles https://doc.wikimedia.org/codex/latest/components/demos/icon.html#css-only-version
QA
- No large visual changes in popups, especially looking at all button and icons
- Make sure to check disambiguation, reference and error popups
Sign off
- T345653 will remove the icon selectors