fix(storage): improve HTTP response error handling and prevent panics

[tinkerer-shubh]

Motivation

This PR refines the error handling logic within the storage library's HTTP response generation.

[peterpeterparker]

While the current implementation that uses unwrap clearly needs a review, absolutely agree, I'd rather integrate it and related error handling in the context of issue #1384. Furthermore, this PR does not really addresses its goal as adding a response which is uncertified isn't really going to improve the HTTP response as it won't be valid anyway. Certification is a tricky subject.

Lastly, any changes in the backend require providing tests.

For those reasons, I'd rather close this submission, but thanks for it anyway.