feat: display corporate catalog name on generated certificates

[bra-i-am]

This PR updates the certificate template to display the corporate catalog name associated with the completed course.

It retrieves the learner’s verified enrollment and related catalog information, and conditionally renders the corporate catalog name on the generated certificate when available.

Caution

The catalog information is only added if the user has a seat assigned in a catalog for the course

Screenshot

[dcoa]

My only comment here is: certificates are delivered in verified and honor mode. It worth to validate this assumption.

[bra-i-am]

@dcoa, thanks for your feedback

You are right, in fact, according to the logic, it takes all the paid enrollments as valid ones

[dcoa]

it should be honor, verified, isn't it? audit is not paid

[igobranco]

@dcoa and @bra-i-am on NAU we haven't been using that certificate template. We are using the DB loaded template. Nevertheless we still need to know how to show that information on those templates.
On the long run, we should copy paste that template, assets, etc. to this repository. But that hasn't been a priority.

Entering to specific code.
The has_paid_enrollment if shouldn't exist on the certificates. There isn't any business requirement for that if. The only relevant requirement is to show an additional information about the catalog and that isn't related to the course mode.