test: fix isolate typo (#8831)
test: fix isolate typo (#8831)

Signed-off-by: AilinKid <172c35aafe80d50c8cec5d18d3df3574d9075f55@qq.com>
BusyJay/tikv,BusyJay/tikv,BusyJay/tikv,pingcap/tikv,c4pt0r/tikv,BusyJay/tikv,pingcap/tikv