Roll Flutter Engine from 86f685c87e06 to 0a4d8b99a95b (2 revisions) (#136727)

https://github.com/flutter/engine/compare/86f685c87e06...0a4d8b99a95b

2023-10-17 skia-flutter-autoroll@skia.org Roll Skia from f7e15ba449f7 to d937d10a0ba9 (7 revisions) (flutter/engine#47003)
2023-10-17 skia-flutter-autoroll@skia.org Roll Fuchsia Mac SDK from gJiEzqLWUvPVgoq8b... to E0Ui7KmD3u5JSKEk5... (flutter/engine#47000)

Also rolling transitive DEPS:
  fuchsia/sdk/core/mac-amd64 from gJiEzqLWUvPV to E0Ui7KmD3u5J

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 jimgraham@google.com,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://issues.skia.org/issues/new?component=1389291&template=1850622

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

bin/internal/engine.version

-86f685c87e064a84f7b92b147328ac8aaddf5a22
+0a4d8b99a95bc603ca5b989e770b7635936d4d73

bin/internal/fuchsia-mac.version

-gJiEzqLWUvPVgoq8b4iI4fGcdultSVCfa9WN3G6ojdsC
+E0Ui7KmD3u5JSKEk5iViIEsUw5Jw63H8h9jOKPQA5ZgC