* Revert harTracer change from
aeba083da0
to make sure that har.Entry._monotonicTime always represents request
start time. The issue from the corresponding report was due to HEAD and
GET request sent for the same URL, that use case is still addressed as
we match by url + method
* Adjust resources monotonic time as well when several contexts are
shown in the trace viewer.
Fixes https://github.com/microsoft/playwright/issues/31133