JLSEC-2026-615 Cookie jar accepts `Secure/__Host-/__Secure-` cookies from non-secure origins in HTTP.jl

Description setcookies! stored every parsed Set-Cookie after only checking that the response scheme was http or https, with no protection symmetric to the read path shouldsend, which already withholds Secure cookies from non-secure requests. A plaintext http origin could therefore plant a Secure...