Now that we prevent `descendant_open_voiced` from being a universal community permission for all custom roles, we need to fix existing roles. There's two steps here:
1. A MariaDB migration to update `roles` and `memberships`
2. A redux-persist migration that updates the clients thread store
This diff will handle just step 1.
Depends on D9493
One part of [[ https://linear.app/comm/issue/ENG-5254/add-a-migration-to-fix-existing-communities-that-have-this-permission | ENG-5254 ]]