Indexing macrolanguage to avoid UI confusion

ECOM-5076

course_discovery/apps/api/tests/test_serializers.py

@@ -347,7 +347,7 @@ class CourseRunSearchSerializerTests(TestCase):
         return d.strftime('%Y-%m-%dT%H:%M:%S') if d else None
 
     def serialize_language(self, language):
-        return language.name
+        return language.macrolanguage
 
     def test_data(self):
         course_run = CourseRunFactory()

course_discovery/apps/course_metadata/search_indexes.py

@@ -85,7 +85,7 @@ class CourseRunIndex(BaseCourseIndex, indexes.Indexable):
     image_url = indexes.CharField(model_attr='image_url', null=True)
 
     def _prepare_language(self, language):
-        return language.name
+        return language.macrolanguage
 
     def prepare_language(self, obj):
         if obj.language: