feat: add exec ed course uuid to learner home serializer

[jono-booth]

Description

Adds a courseUuid field to the Learner Home CourseRunSerializer, resolved via the existing get_course_uuid_for_course() catalog utility (already used by common.djangoapps.entitlements)

Supporting information

• Jira: ENT-9254 — EdX-ExecEd Dashboard redirect to OLC without stopping in Titan

Related changes in other repos:

1. frontend-app-learner-dashboard: extends useCardExecEdTrackingParam to append courseUuid as a course_id query param on the "Start/Resume Course" link, alongside the existing org_id — #26
2. titan: reads that param in Spree::UsersControllerDecorator#show and redirects straight to the OLC instead of rendering the profile page, when it matches a course — #3903

This PR is safe to merge standalone — it only adds a new field to an existing API response; nothing consumes it yet.

Tests

Covered by lms/djangoapps/learner_home/test_serializers.py::TestCourseRunSerializer::test_with_data, which mocks the catalog call so courseUuid is populated, same treatment as every other field on this serializer.

[Copilot]

🟡 Changes recommended

Adding a per-enrollment Catalog UUID lookup in a high-traffic serializer can introduce N+1 external calls and noisy error-level logging when Catalog integration is disabled.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

This PR extends the Learner Home API’s CourseRunSerializer to include a new courseUuid field, derived via the existing Catalog utility get_course_uuid_for_course(), and updates the serializer test to mock that Catalog lookup so the new field is populated during testing.

Changes:

• Add courseUuid to CourseRunSerializer, resolved via openedx.core.djangoapps.catalog.utils.get_course_uuid_for_course().
• Update TestCourseRunSerializer.test_with_data to mock the catalog call so courseUuid is non-null in the “all fields populated” test.

File summaries

File	Description
lms/djangoapps/learner_home/serializers.py	Adds courseUuid to the Learner Home course run payload, computed from Catalog.
lms/djangoapps/learner_home/test_serializers.py	Mocks the catalog UUID lookup so the serializer test continues to assert all fields are populated.

Review details

Suppressed comments (1)

lms/djangoapps/learner_home/serializers.py:121

• Calling get_course_uuid_for_course() here will emit an error-level log whenever CatalogIntegration is disabled (see check_catalog_integration_and_get_user()), and Learner Home can serialize many course runs per request. This can create noisy/error logs in deployments that don’t use the catalog service. Consider guarding the call behind a single integration-enabled check at request scope (and returning None silently when disabled) or adjusting the catalog utility’s logging behavior so “integration disabled” isn’t logged per serialized item.

    def get_courseUuid(self, instance):
        course_uuid = get_course_uuid_for_course(instance.course_id)
        return str(course_uuid) if course_uuid else None

• Files reviewed: 2/2 changed files
• Comments generated: 1
• Review effort level: Lite

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[brobro10000]

Please regen the migration file with the Django command.