Roll Flutter Engine from 7c78ea210c19 to 1273bfaa70c6 (1 revision) (#134602)

https://github.com/flutter/engine/compare/7c78ea210c19...1273bfaa70c6

2023-09-13 skia-flutter-autoroll@skia.org Roll Skia from 2d295711337c to b7d77eb2a9d3 (2 revisions) (flutter/engine#45753)

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 bdero@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

-7c78ea210c194ebaba08189ae116fe021b48d716
+1273bfaa70c6589e5cc05dde660ff1a57cb1730b