[Refactor] Slash-n-Burn Word Cloud BuiltIn XBlock

[irfanuddinahmad]

See parent epic: openedx/openedx-platform#37819

---

Rollout Position

Step 2 of 8 — Small footprint (~837 LOC). Has a custom webpack config (xmodule/assets/word_cloud/webpack.config.js) that needs to be cleaned up alongside the main webpack.builtinblocks.config.js entries.

---

Block Details

Toggle	USE_EXTRACTED_WORD_CLOUD_BLOCK in openedx/envs/common.py
Shim class	_BuiltInWordCloudBlock in xmodule/word_cloud_block.py
Entrypoint	word_cloud = "xmodule.word_cloud_block:WordCloudBlock" in pyproject.toml

---

Checklist

Pre-condition

• Review PRs merged into the built-in Word Cloud XBlock code in edx-platform after the extraction work was done — port any bug fixes or improvements to xblocks-contrib if not already there.

Steps (single PR)

• Remove the toggle — delete USE_EXTRACTED_WORD_CLOUD_BLOCK from openedx/envs/common.py and all usages.
• Remove the shim — delete _BuiltInWordCloudBlock class and the from xblocks_contrib.word_cloud import WordCloudBlock as _ExtractedWordCloudBlock import from xmodule/word_cloud_block.py.
• Remove the entrypoint — delete word_cloud = "xmodule.word_cloud_block:WordCloudBlock" from pyproject.toml.
• Remove remaining assets:
  • xmodule/word_cloud_block.py (Python class)
  • xmodule/assets/word_cloud/ (entire directory, including custom webpack.config.js and D3 vendor libs)
  • lms/templates/word_cloud.html (template)
  • xmodule/static/css-builtin-blocks/WordCloudBlockDisplay.css (CSS)
  • Webpack entries WordCloudBlockDisplay / WordCloudBlockEditor in webpack.builtinblocks.config.js
• Run smoke tests on the extracted Word Cloud block to verify nothing is broken.

[irfanuddinahmad]

Implementation PR: openedx/openedx-platform#38745