Featured Product/Category: some button styles don't get applied

[Aljullu]

Width settings and font size styles don't take effect in the Featured Product/Category inner button.

To reproduce

1. Add a Featured Product or Featured Category block to a post or page.
2. Click on the inner button.
3. Try changing its Width settings and Typography size.
4. Notice nothing changes. This also affects the frontend.

Expected behavior

The user should be able to change the width and font size of the button.

Screenshots

Kooha-01-31-2022-10-39-25.mp4

[Aljullu]

@gigitux do you think we should add this to the Global styles epic?

[gigitux]

@Aljullu Thanks for bringing up this! I added this issue to #5665 epic 👍