Have Security Policies Enabled by Default

What does this MR do and why?

This MR has security policies enabled by default when a new policy is created.

Screenshots or screen recordings

How to set up and validate locally

1. Create a group where you are the group owner. This requires a GitLab Ultimate license.
2. Create a project in the group "Development Project"
3. Navigate to the project -> Security & Compliance -> Policies page
4. Create a new Scan Result policy. Confirm that Enabled is selected by default.
5. Navigate back to the project -> Security & Compliance -> Policies page
6. Create a new Scan Execution policy. Confirm that the policy yaml has enabled: true set by default.

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.