Exercises Pleroma.ReverseProxy.Client.Hackney with follow_redirect enabled behind an HTTPS CONNECT proxy, ensuring the client follows a relative redirect and can stream the final body.
Hackney 1.25 crashes when follow_redirect is enabled behind an HTTPS CONNECT proxy and the Location header is relative (hackney_http_connect transport).
This test demonstrates the failure and verifies Tesla-level redirects work when hackney redirects are disabled.
Reproduces the Hackney 1.25 pooled redirect cleanup issue which can surface as :req_not_found when the adapter returns a Ref and the body is later fetched.
Hackney 1.25.x has redirect handling issues behind CONNECT proxies and with pools.
Disable hackney-level redirects and rely on Tesla.Middleware.FollowRedirects instead.
Also default to with_body: true so redirects can be followed reliably.
