In ~Palm and earlier, all built-in XBlock Sass was included into CMS
(and LMS) styles before being compiled. So, if a site theme was meant to
affect built-in XBlock styling, those changes would be manifested
directly in the base CMS CSS that is included into every single Studio
page. When the user provided the `?site_theme` querystring parameter,
which is intended to allow devs & admins to view Studio through a given
theme, CMS would look up the given theme and serve the corresponding
base CMS CSS, which would affect the built-in XBlocks views (as
expected).
After ~Palm, built-in XBlocks styles are handled more similarly to to
pure XBlock styles, in that they are only requested when CMS tries to
render the block. In Studio, blocks are not rendered by the original
request, but by a subsequent AJAX request to the `/container_preview`
enpoint. Thus, passing the `?site_theme` query parameter to the original
request will apply the given theme to Studio's chrome, but the theme
will _not_ apply to built-in XBlock views, whose CSS is now loaded via
async request.
To fix this, we simply pass Studio's querystring parameters (including
`?site_theme`) along to the `/container_view` AJAX request. This will
cause CMS to correctly serve the built-in XBlock CSS from the theme
specified by `?site_theme`, rather than whatever the current theme is.
Part of: https://github.com/openedx/edx-platform/issues/32292
* refactor: improve typing of StaticFile named tuple
* feat: copy static asset files into the clipboard
* feat: paste static assets
* feat: show notification in studio about pasted assets
* fix: HTML XBlocks would lose the editor="raw" setting when copy-pasted.
* feat: copy python_lib.zip to the clipboard when it seems to be in use
* feat: Implement paste button
* chore: improve docs and add tests for python API
* fix: drive-by fix to use a better API for comparing XML
* feat: track which XBlock something was copied from
* feat: add tests
* feat: enable import linter so content_staging's public API is respected
* fix: error seen when trying to paste drag-and-drop-v2 blocks
* fix: use strip_text=True consistently for XML comparisons
* refactor: rename get_user_clipboard_status to get_user_clipboard
* feat: Better error reporting when pasting in Studio
* chore: convert new test suite to pytest assertions
* refactor: push READY status check into the API per review suggestion
* fix: use strip_text=True consistently for XML comparisons
* fix: store "copied_from_block" as a string to avoid Reference field issues
* fix: minor lint error
* refactor: move data types to data.py per OEP-49
* refactor: simplified tasks.py for discussions
* fix: do not create a topic for the unpublished unit
* feat: added user messages and backed now uses discussion_enabled flag
* fix: update default for discussion_enabled flag
* feat: removed redundant tests and fixes
