in v6.5.4, lightning failed at checksum stage when PD leader change

[lance6716]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

2. What did you expect to see? (Required)

3. What did you see instead (Required)

EOF
github.com/tikv/pd/client.(*client).processTSORequests
	/go/pkg/mod/github.com/tikv/pd/client@v0.0.0-20221031025758-80f0d8ca4d07/client.go:1090
github.com/tikv/pd/client.(*client).handleDispatcher
	/go/pkg/mod/github.com/tikv/pd/client@v0.0.0-20221031025758-80f0d8ca4d07/client.go:847
runtime.goexit
	/usr/local/go/src/runtime/asm_amd64.s:1594
github.com/tikv/pd/client.(*tsoRequest).Wait
	/go/pkg/mod/github.com/tikv/pd/client@v0.0.0-20221031025758-80f0d8ca4d07/client.go:1313
github.com/tikv/pd/client.(*client).GetTS
	/go/pkg/mod/github.com/tikv/pd/client@v0.0.0-20221031025758-80f0d8ca4d07/client.go:1333
github.com/pingcap/tidb/br/pkg/lightning/restore.(*tikvChecksumManager).Checksum
	/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/br/br/pkg/lightning/restore/checksum.go:315
github.com/pingcap/tidb/br/pkg/lightning/restore.DoChecksum
	/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/br/br/pkg/lightning/restore/checksum.go:161
github.com/pingcap/tidb/br/pkg/lightning/restore.(*TableRestore).postProcess
	/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/br/br/pkg/lightning/restore/table_restore.go:860
github.com/pingcap/tidb/br/pkg/lightning/restore.(*Controller).restoreTables.func7.1
	/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/br/br/pkg/lightning/restore/restore.go:1682
runtime.goexit
	/usr/local/go/src/runtime/asm_amd64.s:1594
fetch tso from pd failed

4. What is your TiDB version? (Required)

[lance6716]

lightning can reuse pd.IsLeaderChange to retry when PD side ports ErrClientTSOStreamClosed into release-6.5 which introduced in https://github.com/tikv/pd/pull/6160/files

[lance6716]