dillon1000/react

Revert "Performance tracks are sorted by start time" hack (#31518)

This reverts commit d3bf32a95806b6d583ef041b8d83781cd686cfd8 which was
part of #30983

When you have very deep trees this trick can cause the top levels to
skew way too much from the real numbers. Creating unbalanced trees.

The bug should have been fixed in Chrome Canary now so that entries
added later are sorted to go first which should've addressed this issue.