Roll Flutter Engine from d3dbd4225e08 to df6b15d35703 (6 revisions) (#142023)

https://github.com/flutter/engine/compare/d3dbd4225e08...df6b15d35703

2024-01-22 jonahwilliams@google.com [Impeller] dont emulate command buffers for compute on Metal/Vulkan. (flutter/engine#49922)
2024-01-22 30870216+gaaclarke@users.noreply.github.com [Impeller] fixed colorspace for metal screenshots (flutter/engine#49941)
2024-01-22 jonahwilliams@google.com [Impeller] remove frame counter that was unused in Vulkan allocator. (flutter/engine#49913)
2024-01-22 jason-simmons@users.noreply.github.com [Impeller] Create the golden test screenshotter after setting the Vulkan ICD environment variable (flutter/engine#49948)
2024-01-22 737941+loic-sharma@users.noreply.github.com [Windows] Rename and move EGL types (flutter/engine#49900)
2024-01-22 skia-flutter-autoroll@skia.org Roll Skia from fa5f2461554f to 58973cca0edd (2 revisions) (flutter/engine#49947)

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://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

-d3dbd4225e085467f615f5f51e54839c70aa89fb
+df6b15d35703175f73667765280bdda064eed407