feat: consistent navigate button

[d0choa]

This PR just standardises the navigate column icon. It can be changed later on but at least they are consistent now.

Two questions I might not be the best person to answer:

• Is there enough here to do an abstraction that is reused?
• There could be a problem with alignment. Content was centered and header untouched. It looked good in busy widgets but not to busy. Alignment is not totally consistent in this PR

[d0choa]

Examples of the 2 different implementations:
Study page:

Variant page

[carcruz]

I'll merge to keep the UI consistent.
I agree with the feedback. We can either extend our Link component or create a new one for this purpose, which will address the inconsistent styles.