[dynamo][dashboard] minor fixes for a clean Dashboard (#88056)
* better check for cold start latency
* sort on inductor column for better readability.
cc @mlazos @soumith @voznesenskym @yanboliang @penguinwu @EikanWang @jgong5 @Guobing-Chen @chunyuan-w @XiaobingSuper @zhuhaozhe @blzheng @Xia-Weiwen @wenzhe-nrv @jiayisunx
Pull Request resolved: https://github.com/pytorch/pytorch/pull/88056
Approved by: https://github.com/ngimel
