Fix Delayed when required after async/http/protocol/*

[zarqman]

If any part of async/http/protocol/* is required before Async::HTTP::Body::Delayed, then Delayed cannot be loaded. This PR corrects that.

Types of Changes

• Bug fix.

Contribution

• [ ] I added tests for my changes.
• [x] I tested my changes locally.
• [x] I agree to the Developer's Certificate of Origin 1.1.

[ioquatix]

Thanks!