Roll Flutter Engine from b04c2a378302 to 2c69d05dfafb (3 revisions) (#134164)

https://github.com/flutter/engine/compare/b04c2a378302...2c69d05dfafb

2023-09-06 skia-flutter-autoroll@skia.org Roll ANGLE from 1b8ab5382ff6 to 7b0bb0f6e785 (2 revisions) (flutter/engine#45503)
2023-09-06 skia-flutter-autoroll@skia.org Roll Skia from 487cd9240571 to 59e54ccf25a4 (1 revision) (flutter/engine#45504)
2023-09-06 zanderso@users.noreply.github.com Roll clang to 576b184d6e3b633f51b908b61ebd281d2ecbf66f (flutter/engine#45499)

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 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

-b04c2a378302ae9800720620fc1b3786ca583240
+2c69d05dfafbbedca38c48238e05bbb26c462b69