## Problem
In #12217, we began passing the stripe size in reattach responses, and
persisting it in the on-disk state. This is necessary to ensure the
storage controller and Pageserver have a consistent view of the intended
stripe size of unsharded tenants, which will be used for splits that do
not specify a stripe size. However, for backwards compatibility, these
stripe sizes were optional.
## Summary of changes
Make the stripe sizes required for reattach responses and on-disk
location configs. These will always be provided by the previous
(current) release.
47f7efee06