Roll Flutter Engine from e97155428ad4 to ef9ceed1af08 (1 revision) (#135308)

https://github.com/flutter/engine/compare/e97155428ad4...ef9ceed1af08

2023-09-22 skia-flutter-autoroll@skia.org Roll Skia from a911bc1352f2 to f346a813ffd4 (1 revision) (flutter/engine#46195)

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 jonahwilliams@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

-e97155428ad46b59c1b3aa9d8cbe182f65401182
+ef9ceed1af0866c5e194ae52da6e5f82ce6a83b3