Roll Flutter Engine from b8afb6deacf3 to 4edbefa5e8f7 (1 revision) (#134360)

https://github.com/flutter/engine/compare/b8afb6deacf3...4edbefa5e8f7

2023-09-09 skia-flutter-autoroll@skia.org Roll Skia from 386c7a6a56fd to 1bb0f15f2cff (1 revision) (flutter/engine#45615)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC rmistry@google.com,zra@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

bin/internal/engine.version

-b8afb6deacf35bf1cd2f84be13872a6759e43cdd
+4edbefa5e8f747c92d7738ef526a7b84f16b5bac