make bench-daily get empty data for BenchmarkXXXPartitionXXX

[tiancaiamao]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

make bench-daily TO=/tmp/2024-05-23.json
cat /tmp/2024-05-23.json

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

No data missing in the result json file

3. What did you see instead (Required)

A lot of test cases with BenchmarkXXXPartitionXXX get empty data like "NsPerOp":0

{"Name":"BenchmarkRangeExprPartitionPreparedPointGet/IndexPointPlanCacheOn","NsPerOp":0,"AllocsPerOp":1795,"BytesPerOp":289237}

Open here to see the rendered result http://107.173.155.134:18081/

4. What is your TiDB version? (Required)

master

[tiancaiamao]

ref #25754