Add enable_modsecurity toggle to Ingress Managed App

What does this MR do?

Add enable_modsecurity toggle to Ingress managed app and exposes as checkbox within UI

New column added with dependency MR !21968 (merged)

This replaces the previous behavior hid behind the ingress_modsecurity feature flag, instead requiring "opt-in" to enable modsecurity during ingress installation

See #39140 (closed) for details

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

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