Expose status code from policy object?

In one of my project where I get to implement a cache, I store the response body (content) and the policy (via `.toObject()`) together. When assembling a response from cache, I have access to the body and the header through the policy object, but not the status code. Since it is already stored in the policy, would it be good to also expose it (e.g. directly with a new `.statusCode()` API, or from `evaluateRequest()` or `revalidatedPolicy()`)?

Start by reading the policy object returned by .toObject(), then compare the information exposed by evaluateRequest() and revalidatedPolicy(). Decide where a cached response's status code should be exposed and define the expected API behavior. Done means callers can recover the status code alongside the cached body and headers, with coverage for the chosen API.

Written by the indexing model from the issue text.