Generated using manage.py squashmigrations, with some work:
- Used my patch to support squashing AddConstraint/RemoveConstraint
operations.
- Manually removed the add/deletion of cloud_xor_self_hosted, since it
didn't squash properly.
- Temporarily removed a couple operations from their migration files,
and added them back manually both to the original file and the
squash file, to allow later operations to squash
properly. Specifically, these are the two unsquashed operations
documented with comments at the end of the squash migration file.
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