Roll Flutter Engine from b6d37f8f74ad to 4571695f9e76 (6 revisions) (#128350)

https://github.com/flutter/engine/compare/b6d37f8f74ad...4571695f9e76

2023-06-06 jacksongardner@google.com Use proper sampling options in Skwasm's drawAtlas. (flutter/engine#42595)
2023-06-06 zanderso@users.noreply.github.com Revert "[Impeller] Reland: Add Impeller Metal support in the embedder API (#42411)" (flutter/engine#42593)
2023-06-06 zanderso@users.noreply.github.com Fix raster cache optional value check logic (flutter/engine#42592)
2023-06-06 zhangzhijian.123@bytedance.com [Impeller] Fix the rendering issue when the tile mode of gradient is set to 'decal' (flutter/engine#42591)
2023-06-06 skia-flutter-autoroll@skia.org Roll Skia from e8a71c76b88f to 4065e92bf577 (1 revision) (flutter/engine#42587)
2023-06-06 skia-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from vAwdggqMrL1yoH_Zn... to lpbkSRJBMkPs0FM7_... (flutter/engine#42590)

Also rolling transitive DEPS:
  fuchsia/sdk/core/linux-amd64 from vAwdggqMrL1y to lpbkSRJBMkPs

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 jacksongardner@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

-b6d37f8f74ad58ead5de2644e1211b5e777a5680
+4571695f9e7689d13717e1305336cc8365e97a71

bin/internal/fuchsia-linux.version

-vAwdggqMrL1yoH_ZneUmvbWLwC--mU9X4Uk4lddoxm0C
+lpbkSRJBMkPs0FM7_lXKc78a93s5nemNNdY4qQYCw4kC