campaigns: update preview icons
Created by: LawnGnome
Closes #14426 (closed). Here's how it looks now:
I made a couple of minor changes from the Figma:
- I adopted the new tooltip text, but copy edited it slightly to make it clearer, particularly the "won't publish" case, which is now more active.
- I made the "won't publish" case darker than the Figma has it (specifically, by making it
text-muted
): the mock is$gray-10
, which has a contrast ratio against the background of 3.19, which is below pretty much all the guidelines.text-muted
is (mostly) OK. We do lose some visual hierarchy as a result, but I think it's the best compromise we have available.