exeuctor: fix coprocessor goroutine leak for IndexMerge (#41610)#41658

Merged

ti-chi-bot merged 4 commits intopingcap:release-6.1from ti-chi-bot:cherry-pick-41610-to-release-6.1

Mar 29, 2023

+54

Commits on Feb 22, 2023

This is an automated cherry-pick of pingcap#41610

guo-shaoge
authored and
ti-chi-bot
committed

Commits on Mar 29, 2023