Roll Flutter Engine from ef568c309df5 to 1ac30863a0b6 (3 revisions) (#137085)

https://github.com/flutter/engine/compare/ef568c309df5...1ac30863a0b6

2023-10-23 skia-flutter-autoroll@skia.org Roll Skia from d27ff651a99b to 8a0324990bf5 (1 revision) (flutter/engine#47229)
2023-10-23 jonahwilliams@google.com [Impeller] remove image upload workarounds. (flutter/engine#47209)
2023-10-23 jonahwilliams@google.com [Impeller] Disable raster stats service protocol. (flutter/engine#47206)

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 jimgraham@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://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

bin/internal/engine.version

-ef568c309df53984b12b60fd3b2fa7a3e7113c85
+1ac30863a0b637d899c43fe8fc65f862a92c5356