bug: AvoidSinglePipeOperator false negative

[knocte]

From FSharpLint codebase itself (src/FSharpLint.Core/Rules/Conventions/DisallowShadowing.fs):

    let extractIdentifiersFromSimplePats (simplePats: SynSimplePats) : List<Ident> =
        match simplePats with
        | SynSimplePats.SimplePats(patterns, _, _) ->
            patterns |> List.map extractIdentifier