Make CI/CD form error to be Pajamas compliant

What does this MR do and why?

Make the form error on the CI/CD project settings to be Pajamas complaint.

Resolves issue #364961 (closed)

Screenshots or screen recordings

before	after

How to set up and validate locally

1. Feature.enable :auto_rollback
2. Open Project settings > CI/CD
3. Scroll to find "Automatic deployment rollbacks"
4. In the file ee/app/views/projects/settings/ci_cd/_auto_rollback.html.haml add - @project.errors.add(:base, 'Something went wrong') on top to force trigger the error

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.

Related to #364961 (closed)