Roll Flutter Engine from 72b68622fffa to 879308a52228 (1 revision) (#125057)

https://github.com/flutter/engine/compare/72b68622fffa...879308a52228

2023-04-18 30870216+gaaclarke@users.noreply.github.com [Impeller] Turned on wide gamut support by default. (flutter/engine#39801)

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 chinmaygarde@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

-72b68622fffa868b9d33934670070928c7fc1032
+879308a5222831b0817167242b0cf3b6a251ff39