Display full descendant count on taxonomy tag list page [FC-0036]

[bradenmacdonald]

Implements openedx/modular-learning#191

Depends on openedx/openedx-learning#156

This updates the UI to display the total number of descendant tags for each tag, not just the direct number of children.

Before	After

Private ref: FAL-3655

[openedx-webhooks]

Thanks for the pull request, @bradenmacdonald! Please note that it may take us up to several weeks or months to complete a review and merge your PR.

Feel free to add as much of the following information to the ticket as you can:

• supporting documentation
• Open edX discussion forum threads
• timeline information ("this must be merged by XX date", and why that is)
• partner information ("this is a course on edx.org")
• any other information that can help Product understand the context for the PR

All technical communication about the code itself will be done via the GitHub pull request interface. As a reminder, our process documentation is here.

Please let us know once your PR is ready for our review and all tests are green.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b234344) 89.02% compared to head (84d4363) 89.02%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #826   +/-   ##
=======================================
  Coverage   89.02%   89.02%           
=======================================
  Files         545      545           
  Lines        9585     9585           
  Branches     2054     2054           
=======================================
  Hits         8533     8533           
  Misses       1005     1005           
  Partials       47       47           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[pomegranited]

👍 with one test request.

• I tested this on my devstack with openedx/openedx-learning#156
  • Navigated to the taxonomies list and selected a taxonomy
  • Ensured that the descendant counts are showing as expected next to each tag in the tree.
• I read through the code
• I checked for accessibility issues by using my keyboard to navigate.
• Includes documentation N/A
• User-facing strings are extracted for translation N/A

[xitij2000]

Looks good!

[openedx-webhooks]

@bradenmacdonald 🎉 Your pull request was merged! Please take a moment to answer a two question survey so we can improve your experience in the future.

[bradenmacdonald]

Thanks @xitij2000 !