[Repo Assist] Add AsyncSeq.tryFindBack, findBack, tryFindBackAsync, findBackAsync - #289

[Repo Assist] Add AsyncSeq.tryFindBack, findBack, tryFindBackAsync, findBackAsync#289

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mainfsprojects/FSharp.Control.AsyncSeq:mainfrom

repo-assist/improve-findback-2026-03-25-ec3fab6e9f97deeffsprojects/FSharp.Control.AsyncSeq:repo-assist/improve-findback-2026-03-25-ec3fab6e9f97deefCopy head branch name to clipboard