planner: make converge index merge path feel the prefer tiflash hint (#56227)#56328

Merged

ti-chi-bot[bot] merged 2 commits intopingcap:release-7.1from ti-chi-bot:cherry-pick-56227-to-release-7.1

Nov 11, 2024

+40-4

Commits on Sep 26, 2024

This is an automated cherry-pick of pingcap#56227

AilinKid
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ti-chi-bot
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Commits on Nov 11, 2024

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AilinKid
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