Batch export of pod data error

Created by: wenxin-01

Environment http://192.168.18.71:30880/

To Reproduce Steps to reproduce the behavior:

1. Go to 'toolbox'
2. Click on 'Metering and Billing'
3. click on 'view consumption' in Cluster resource consumption
4. go to page of nodes
5. go to page of pods
6. Select two pods
7. Export resource consumption records in CSV format

Expected behavior Each pod corresponds to a CSV file and the content is correct Actual behavior only one CSV file and the content has the information of all pods in the node.

/kind bug /assign @harrisonliu5 /milestone 3.1.0 /priority high