Manual roll Flutter Engine from 10c480310926 to a7af55c56aa6 (4 revisions) (#135071)

Manual roll requested by zra@google.com

https://github.com/flutter/engine/compare/10c480310926...a7af55c56aa6

2023-09-19 goderbauer@google.com Enable strict-inference (flutter/engine#46062)
2023-09-19 skia-flutter-autoroll@skia.org Roll Skia from 559a964f9f1b to fe3568162721 (5 revisions) (flutter/engine#46069)
2023-09-19 58529443+srujzs@users.noreply.github.com Implement JSObject instead of extending (flutter/engine#46070)
2023-09-19 matanlurey@users.noreply.github.com `FlutterMouse.*` -> `kFlutterMouse.*`, so we can lint header files. (flutter/engine#46056)

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

-10c480310926d7e04a77ba8a04d321f9d225a545
+a7af55c56aa63cc37da4ca334737cc992e041302