[Repo Assist] perf: avoid Seq allocations in hot markdown-parsing paths#1173

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repo-assist/perf-avoid-seq-alloc-2026-04-17-f1aa81cc016ee835fsprojects/FSharp.Formatting:repo-assist/perf-avoid-seq-alloc-2026-04-17-f1aa81cc016ee835Copy head branch name to clipboard