It doesn't really affect us because we never use `return`, `break` or
`throw` inside transactions, since it would be confusing exactly because
it wouldn't be 100% clear whether the transaction is committed or not.
So we're using the new default value, which will be the only available
option in Rails 7.2 [1].
[1] Commit eccc6061f4 in https://github.com/rails/rails
e35bf97928