The feature was pretty much a soft-bootstrapper -- it listened
to both Bootstrapped and Reverted. Bootstrappers have a few more
protections in terms of error handling and safe reverting, so there's
no point in (badly) re-implementing bootstrapper functionality within
TenantConfig just so it could be a Feature.
Going forward, all Features should be things that are mostly agnostic
of the tenant state, and especially they should not use bootstrapped/
reverted events. Bootstrappers are simply more appropriate and safe.
