Roll Flutter Engine from 187334c39b44 to 3f45f9db4471 (3 revisions) (#140412)

https://github.com/flutter/engine/compare/187334c39b44...3f45f9db4471

2023-12-19 skia-flutter-autoroll@skia.org Roll Skia from 541f16af8b3e to df1a7ccbdc97 (3 revisions) (flutter/engine#49250)
2023-12-19 skia-flutter-autoroll@skia.org Roll Skia from 0d39fb28b32d to 541f16af8b3e (1 revision) (flutter/engine#49246)
2023-12-19 john@johnmccutchan.com Use new SurfaceProducer external texture class for rendering platform views (flutter/engine#49201)

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

-187334c39b44bf5dc29bfdefcbed093e86832b64
+3f45f9db4471c3b5a2363b078761df9034563794