Delete card hover effect in small viewports

[marinaaisa]

Bug/issue #127050375, if applicable:

Summary

Delete card hover effect in small viewports. Hover effects in small viewports are only triggered when the link is active and we don't need this effect for active states.

Dependencies

NA

Testing

Steps:

1. Run a .doccarchive that has Cards on it
2. Use a small viewport
3. Click in the Card
4. Assert that there is no effect in its active state

Checklist

Make sure you check off the following items. If they cannot be completed, provide a reason.

• Added tests
• Ran npm test, and it succeeded
• Updated documentation if necessary

[hqhhuang]

I personally think we should keep the hover effect consistent across viewports.