fixup(squash): fix tests

Author: kdmccormick

tests/openedx_content/applets/publishing/test_api.py

@@ -1503,6 +1503,7 @@ def test_direct_field_publishing_container_marks_dependencies_indirect(self) ->
         )
         unit = containers_api.create_container(
             self.learning_package.id, "direct_unit",
+            container_code="direct_unit",
             created=self.now, created_by=None, container_cls=TestContainer,
         )
         containers_api.create_container_version(
@@ -1536,6 +1537,7 @@ def test_direct_field_unit_no_version_change_still_direct_true(self) -> None:
         )
         unit = containers_api.create_container(
             self.learning_package.id, "no_change_unit",
+            container_code="no_change_unit",
             created=self.now, created_by=None, container_cls=TestContainer,
         )
         unit_v1 = containers_api.create_container_version(
@@ -1591,6 +1593,7 @@ def test_direct_field_publishing_component_marks_parent_indirect(self) -> None:
         )
         unit = containers_api.create_container(
             self.learning_package.id, "leaf_unit",
+            container_code="leaf_unit",
             created=self.now, created_by=None, container_cls=TestContainer,
         )
         containers_api.create_container_version(
@@ -1627,6 +1630,7 @@ def test_direct_field_both_selected_both_direct(self) -> None:
         )
         unit = containers_api.create_container(
             self.learning_package.id, "both_unit",
+            container_code="both_unit",
             created=self.now, created_by=None, container_cls=TestContainer,
         )
         containers_api.create_container_version(