v8.5.6: Add new session variable "tidb_opt_partial_ordered_index_for_topn" (#22495)#22737

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ti-chi-bot[bot] merged 7 commits intopingcap:feature/preview-v8.5.6from

ti-chi-bot:cherry-pick-22495-to-release-8.5

Apr 13, 2026

Commits on Apr 13, 2026

Add temp.md

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Delete temp.md

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Auto-sync: Update English docs from Chinese PR

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sync according to zh changes

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Update system-variables.md

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Apply suggestions from code review

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remove the info about v9.0.0
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