This CL simplifies the reporting of full GC cycles and the connection
between the GC of the managed C++ heap and the managed Javascript heap.
It moves the call to GCTracer::RecordFullCycleToRecorder to be part of
GCTracer::StopCycle.

Bug: v8:12503
Bug: chromium:1154636
Change-Id: I332dbcd81d2e5bdda83f3353c6526fc18e23ebd5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3456563Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Nikolaos Papaspyrou <nikolaos@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79075}