Backport request for Quince: openedx-learning 0.2.3

[bradenmacdonald]

Could we please get openedx/edx-platform#33476 merged into the Quince master branch?

For context, this PR squashes a bunch of complex migrations in the openedx_tagging and content_tagging apps. These apps have not previously been included in any named releases. Over the past months of development, the migrations got a little messy, and we foresee that there will be some problems in the future, so we created a squashed version of the migrations that is much simpler and more robust. We tried to get these in for Quince but missed the initial cutoff by a few hours. So we'd like to get this backport merged. The risk is quite low as there are no user-facing features in Quince that use this code yet; it's just about making sure the database and migrations are in a state that's easily understandable to prevent upgrade issues in the future.

[mariajgrimaldi]

@bradenmacdonald: it seems your PR was already merged. I'll close this issue then! Thanks