Roll Flutter Engine from 78c1ad249b57 to 7a9409e12fab (8 revisions) (#135266)

https://github.com/flutter/engine/compare/78c1ad249b57...7a9409e12fab

2023-09-21 skia-flutter-autoroll@skia.org Roll Skia from 0cf83a86c56d to a0928a46b9c8 (19 revisions) (flutter/engine#46164)
2023-09-21 john@johnmccutchan.com Re-enable HardwareBuffer backed Platform Views on Android >= 29 (flutter/engine#46071)
2023-09-21 jonahwilliams@google.com [Impeller] Use final cmd buffer to present drawable. (flutter/engine#46023)
2023-09-21 matanlurey@users.noreply.github.com More Clang Tidy --fix[es] to header files (flutter/engine#46151)
2023-09-21 dkwingsmt@users.noreply.github.com Reland: Enforce the rule of calling FlutterView.Render (#45300) (flutter/engine#45555)
2023-09-21 yjbanov@google.com Revert "[web] fix clicks on merged semantic nodes (#43620)" (flutter/engine#46067)
2023-09-21 matanlurey@users.noreply.github.com Move `git_repo_tools` and `process_fakes` outside of `clang_tidy`. (flutter/engine#46017)
2023-09-21 godofredoc@google.com Remove linux fuchsia from recipes cq. (flutter/engine#46153)

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

-78c1ad249b57164c85468c39491c4f618724ce5d
+7a9409e12fab770a86e115ade95ec38d083e63f2