feat: use authz permission checks for tagging in course authoring

[wgu-taylor-payne]

Description

Use authz permission checks for tagging in course authoring when the AUTHZ_COURSE_AUTHORING_FLAG flag is enabled.

Reopens #38416 (auto-closed when base branch was merged).

Companion openedx-core PR: openedx/openedx-core#550.

Supporting information

Closes #38143.
Adjacent investigation into legacy permissions around tagging: #38222
Permission list: https://openedx.atlassian.net/wiki/spaces/OEPM/pages/5528715266/openedx-authz+permission+list

Testing instructions

Automated tests

pytest --ds=cms.envs.test \
openedx/core/djangoapps/content_tagging/rest_api/v1/tests/test_views.py::TestObjectTagOrgViewWithAuthz \
cms/djangoapps/contentstore/views/tests/test_block.py::TestXBlockOutlineHandlerAuthz

Manual tests

• Enable the authz.enable_course_authoring flag.
• Navigate to the course outline or block editor for a course where the flag is enabled.
• Global staff/superusers: can view outline, add/remove tags, see edit/delete controls on tags.
• Course staff role: can view outline, add/remove tags, see edit/delete controls on tags. Cannot tag other courses they don't have the role on.
• Course auditor role: can view outline and see existing tags (read-only). Cannot add/remove tags (403).

Deadline

Verawood

Other information

GitHub Copilot with Claude Sonnet 4 was used to aid development.

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Pull request overview

This PR updates course authoring tagging endpoints to use openedx-authz permission checks (behind AUTHZ_COURSE_AUTHORING_FLAG) while retaining legacy permission behavior for non-course objects, and aligns CMS outline access with AuthZ.

Changes:

• Bump openedx-core to 0.45.0 and relax the corresponding constraints upper bound to <0.46.
• Add conditional AuthZ-based permission enforcement for object tagging (view/manage) and serializer permission fields.
• Switch xblock_outline_handler read-access checks to user_has_course_permission with legacy fallback when AuthZ is disabled, and add AuthZ-focused tests.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
requirements/edx/testing.txt	Bumps openedx-core pin to 0.45.0.
requirements/edx/doc.txt	Bumps openedx-core pin to 0.45.0.
requirements/edx/development.txt	Bumps openedx-core pin to 0.45.0.
requirements/edx/base.txt	Bumps openedx-core pin to 0.45.0.
requirements/constraints.txt	Allows openedx-core up to <0.46.
openedx/core/djangoapps/content_tagging/rest_api/v1/views.py	Adds AuthZ branching for course object tag view/manage permissions and permission classes.
openedx/core/djangoapps/content_tagging/rest_api/v1/serializers.py	Adds AuthZ-backed serializer permission computations for tagging/deleting.
openedx/core/djangoapps/content_tagging/auth.py	Adds helper to determine whether to use AuthZ for a given object id/context.
openedx/core/djangoapps/content_tagging/rest_api/v1/tests/test_views.py	Adds AuthZ tests for object tag endpoints and updates query-count expectations.
cms/djangoapps/contentstore/views/tests/test_block.py	Adds AuthZ tests for outline handler access.
cms/djangoapps/contentstore/views/block.py	Uses AuthZ permission check for outline handler, with legacy fallback when AuthZ is disabled.

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[dwong2708]

LGTM! Thanks.