Update policy drawer to be more readable

What does this MR do and why?

Update policy drawer to be more readable

• similar to Remove "scan" and "a" word from New Policy page... (!156415 - merged), show extra wording for certain scan types
• update tests

Changelog: changed

EE: true

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. Upload a GitLab Ultimate license
2. Clone this project
3. Navigate to a project => Secure => Policies => Edit policy project => Link cloned project
4. Select various scan execution policies and verify the actions read correctly

Related to #464720