Makes requests uncancelable when running on Java lower than 16 where cancellation is not supported#1192

vladislavsheludchenkov wants to merge 2 commits intohttp4s:series/0.10http4s/http4s-jdk-http-client:series/0.10from

vladislavsheludchenkov:fix-pre-response-cancellationvladislavsheludchenkov/http4s-jdk-http-client:fix-pre-response-cancellationCopy head branch name to clipboard