expression: fix the wrong behavior of `conv` function (#53681)#56889

Merged

ti-chi-bot[bot] merged 3 commits intopingcap:release-7.1from ti-chi-bot:cherry-pick-53681-to-release-7.1

Nov 11, 2024

+19-1

Commits on Oct 28, 2024

This is an automated cherry-pick of pingcap#53681

qw4990
authored and
ti-chi-bot
committed

Commits on Nov 6, 2024

fixup
qw4990
committed

Commits on Nov 8, 2024

fixmi
qw4990
committed