fix: Avoid double read from hb_cache when returns not_found

[speeddragon]

dev_name does a hb_cache:read call that goes through all the configured stores. In a case of a not_found, we continue with the request and ignore the result.

Problem:

• If we know other hooks can turn this 404 into a 200, we should close this PR.
• If we want to avoid duplicate calls to the stores, we should return as soon as possible. In the end, we can add an option to toggle this behaviour.