Bug Report

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1. Minimal reproduce step (Required)

https://do.pingcap.net/jenkins/blue/rest/organizations/jenkins/pipelines/pingcap/pipelines/tidb/pipelines/ghpr_unit_test/runs/2288/nodes/59/steps/65/log/?start=0

    job_manager_integration_test.go:991: 
        	Error Trace:	pkg/ttl/ttlworker/job_manager_integration_test.go:991
        	Error:      	Should be true
        	Test:       	TestManagerJobAdapterCanSubmitJob

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

3. What did you see instead (Required)

4. What is your TiDB version? (Required)