Add spacing between header and body

What does this MR do and why?

Adds spacing between breadcrumb and policy selection.

Changelog: changed EE: true

Screenshots or screen recordings

before	after

How to set up and validate locally

1. Go to your project
2. Click on Security & Compliance
3. Click on Policies
4. Click on New Policy
5. Verify that the page looks like the image above in the after column

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.