Fix UI alignment and spacing issue with "OR" separator between buttons for Woo 2FA screen

[chihsuan]

This PR addresses the spacing issues related to the "OR" separator between the 2FA action buttons.

This happens in both Production and Staging (brand update).

Before:

After:

Proposed Changes

• Add 32px margin to the top of the 2FA action buttons

Why are these changes being made?

• To match the design.

Testing Instructions

• Checkout this branch
• Go to WooCommerce.com
• Click on Login
• Enter an "email/password" account (not passwordless). If you don't have one, you can create a passwordless account and then add a password in the account settings.
• Click on Continue
• Observe the spacing between the 2FA action buttons is 32px

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
  • For UI changes, have we tested the change in various languages (for example, ES, PT, FR, or DE)? The length of text and words vary significantly between languages.
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:commit-2bf1bb461b68957cff835b1efb91df258532fb33

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:commit-2bf1bb461b68957cff835b1efb91df258532fb33&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:commit-2bf1bb461b68957cff835b1efb91df258532fb33&env=a8c-for-agencies

[matticbot]

This PR does not affect the size of JS and CSS bundles shipped to the user's browser.

Generated by performance advisor bot at iscalypsofastyet.com.

[adrianduffell]

LGTM thanks @chihsuan 🚀