Steps to replicate the issue (include links if applicable):
What happens?:
The list item is highlighted but in a non-standard color.
What should have happened instead?:
Should use background-color-progressive-subtle design token
Software version (skip for WMF-hosted wikis like Wikipedia):
Other information (browser name/version, screenshots, etc.):
This has already been fixed in Minerva, so once this is merged we can remove the style in Minerva.