Update compliance framework policy

What does this MR do?

manage_compliance_framework policy checks if the License custom_compliance_frameworks and FF ff_custom_compliance_frameworks is available at the instance level.

Since licenses are applied to groups in gitlab.com, this MR updates the policy to check license and FF at namespace level. For self-managed instances, it will fallback to global check.

Addresses !53182 (comment 505789887)

Screenshots (strongly suggested)

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