472801b774
Add ResourceTemplates to XBLOCK_MIXINS so it’s applied to all CMS XBlocks at runtime instead of being directly inherited. This keeps the Studio-only feature in edx-platform (where it belongs), while still making it available to built-in and extracted XBlocks. When we extract built-in blocks from the platform, they will not be able to inherit ResourcesTemplates directly; they will get it from XBLOCK_MIXINS. So, we also needed to update a few template-related tests to use the mixed block class (or an instance of it) rather than the unmixed base class, because the unmixed base classes will soon be extracted and thus lack ResourceTemplates. Related to https://github.com/openedx/edx-platform/issues/34827
CMS
===
This directory contains code relating to the Open edX Content Management System ("CMS"). It allows learning content to be created, edited, versioned, and eventually published to the `Open edX Learning Mangement System <../lms>`_ ("LMS"). The main user-facing application that CMS powers is the `Open edX Studio <https://docs.openedx.org/en/latest/educators/concepts/open_edx_platform/what_is_studio.html>`_
See also
--------
* `CMS vs Studio terminology <../docs/decisions/0013-cms-vs-studio.rst>`_
* `CMS vs LMS boundaries <../docs/decisions/0005-studio-lms-subdomain-boundaries.rst>`_