Roll Flutter Engine from 8e3a05c9878e to 4d1f8ff52903 (1 revision) (#136009)

https://github.com/flutter/engine/compare/8e3a05c9878e...4d1f8ff52903

2023-10-05 robert.ancell@canonical.com Use GdkEvent methods to access values, direct access is removed in GTK4. (flutter/engine#46526)

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 chinmaygarde@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://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

-8e3a05c9878e90b98af51e60dfbb598665e8372a
+4d1f8ff52903dc94574397228597488ec8c089d7