Resolve "Display security approval rules when creating a new project - Implement Vulnerability-Check/License-Check rows"

What does this MR do?

MR for #229825 (closed)

Implements default messaging for security related approval rules. Specifically License-Check and Vulnerability-Check

Feature flag

To enable run the following in a rails console:

Feature.enable(:approval_suggestions)

Feature flag removal follow up for next milestone

#235114 (closed)

Video Demo

https://youtu.be/sfPPXzia2Ss

Before

After

When job not configured

When both jobs not configured

When a user manually creates an approval rule even though the job is not configured (we still show the unconfigured row message)

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team

Closes #229825 (closed)