1. Confirmed that a role exists with `descendant_open_voiced` in my local environment
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2. Confirmed that the `memberships` column reflects this permission
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3. Ran the migrations
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4. Re-ran the same query from step 1 to confirm that the role no longer exits
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5. Re-ran the same query from step 2 to confirm that `memberships` was updated
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6. Confirmed the user with the affected role does not see both the chat input bar and the join chat button
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7. Re-set my DB version to `47` and ran the migrations again to make sure if it's run against a DB without any of these roles, the migrations will still succeed