schedule: fix panic when switching placement rules (#7415)#7422

Merged

ti-chi-bot[bot] merged 3 commits intotikv:release-6.1from ti-chi-bot:cherry-pick-7415-to-release-6.1

Sep 10, 2024

+5

Commits on Nov 23, 2023

This is an automated cherry-pick of tikv#7415

rleungx
authored and
ti-chi-bot
committed

Commits on Feb 9, 2024

resolve the conflicts
rleungx
committed

Commits on Sep 10, 2024

Merge branch 'release-6.1' into cherry-pick-7415-to-release-6.1
ti-chi-bot[bot]
authored