ddl: Fix default value filling with finer granularity (#10682) - #10690

ddl: Fix default value filling with finer granularity (#10682)#10690

ti-chi-bot[bot] merged 7 commits into

pingcap:release-7.5pingcap/tiflash:release-7.5from

ti-chi-bot:cherry-pick-10682-to-release-7.5ti-chi-bot/tiflash:cherry-pick-10682-to-release-7.5Copy head branch name to clipboard