lightning: remove some `NOT NULL` constraints on lightning table (#57577)#57600

Merged

ti-chi-bot[bot] merged 3 commits intopingcap:release-8.5from ti-chi-bot:cherry-pick-57577-to-release-8.5

Nov 22, 2024

+8-8

Commits on Nov 21, 2024

Change lightning table structure

joechenrh
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ti-chi-bot
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Fix

joechenrh
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ti-chi-bot
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address comments

joechenrh
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ti-chi-bot
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