unstable test TestHistoryReader

[hawkingrei]

Bug Report

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1. Minimal reproduce step (Required)

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

3. What did you see instead (Required)

 === RUN   TestHistoryReader
    reader_test.go:302: 
        	Error Trace:	util/stmtsummary/v2/reader_test.go:302
        	            				util/stmtsummary/v2/reader_test.go:306
        	Error:      	"[]" should have 2 item(s), but has 0
        	Test:       	TestHistoryReader
    reader_test.go:271: 
        	Error Trace:	util/stmtsummary/v2/reader_test.go:271
        	            				GOROOT/src/runtime/panic.go:522
        	            				GOROOT/src/testing/testing.go:980
        	            				util/stmtsummary/v2/reader_test.go:302
        	            				util/stmtsummary/v2/reader_test.go:306
        	Error:      	Received unexpected error:
        	            	remove tidb-statements.log: no such file or directory
        	Test:       	TestHistoryReader
    reader_test.go:260: 
        	Error Trace:	util/stmtsummary/v2/reader_test.go:260
        	            				GOROOT/src/runtime/panic.go:522
        	            				GOROOT/src/testing/testing.go:980
        	            				util/stmtsummary/v2/reader_test.go:271
        	            				GOROOT/src/runtime/panic.go:522
        	            				GOROOT/src/testing/testing.go:980
        	            				util/stmtsummary/v2/reader_test.go:302
        	            				util/stmtsummary/v2/reader_test.go:306
        	Error:      	Received unexpected error:
        	            	remove tidb-statements-2022-12-27T16-21-20.245.log: no such file or directory
        	Test:       	TestHistoryReader 

4. What is your TiDB version? (Required)