SkiaPerf has identified a regression in restart time metrics:

https://flutter-flutter-perf.skia.org/e/?begin=1632536886&end=1633382183&keys=X9da79a237b5af9f0d5f350d84cee3803&requestType=0&xbaroffset=26039

The implicated change is #87991. Please consider reverting since we are trying to cut the beta branch this week.

/cc @blasten