[Repo Assist] perf: replace ValueOption tracking with while! in pairwise and distinctUntilChanged family#411

dsyme merged 6 commits intomainfsprojects/FSharp.Control.TaskSeq:mainfrom

repo-assist/perf-pairwise-distinct-until-changed-20260427-ca209e6aaefc5cbefsprojects/FSharp.Control.TaskSeq:repo-assist/perf-pairwise-distinct-until-changed-20260427-ca209e6aaefc5cbeCopy head branch name to clipboard