ddl: fix TypeBit default value (#9467)#9479

Merged

ti-chi-bot[bot] merged 8 commits intopingcap:release-8.1from ti-chi-bot:cherry-pick-9467-to-release-8.1

Sep 30, 2024

+100-31

Commits on Sep 27, 2024

This is an automated cherry-pick of pingcap#9467

Lloyd-Pottiger
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ti-chi-bot
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