The PipelineRunScope scope is live on every Run() phase and it isn't
allowed to nest. This means we cannot open a new PipelineRunScope during
TraceScheduleAndVerify() because it can be called in the middle of a
Run(), which we do during effect-control-linearization in the JS
pipeline.

We can fix this by directly using a RuntimeCallTimerScope and a tracing
event, instead of relying on PipelineRunScope to do that.

Change-Id: I3c17b2c0a58ff3cac0d1dcc796f54d29b3444468
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3132506
Auto-Submit: Pierre Langlois <pierre.langlois@arm.com>
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76603}