Manual roll Flutter Engine from 8573f3b63a1f to 84f2fc16e55d (7 revisions) (#127676)

Manual roll requested by zra@google.com

https://github.com/flutter/engine/compare/8573f3b63a1f...84f2fc16e55d

2023-05-26 zanderso@users.noreply.github.com Revert Dart SDK to 398e847c0b24ad2e57194844410613b7dadcb74f (flutter/engine#42347)
2023-05-26 jason-simmons@users.noreply.github.com Apply the drawShadow bounds workaround to the Web HTML backend (flutter/engine#42304)
2023-05-26 skia-flutter-autoroll@skia.org Roll Dart SDK from f17b745f5c3c to 398e847c0b24 (1 revision) (flutter/engine#42345)
2023-05-26 skia-flutter-autoroll@skia.org Roll Fuchsia Mac SDK from AgIKKqtBtb6RJnyI9... to c6-zqvlx2YtyGwGzJ... (flutter/engine#42344)
2023-05-26 skia-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from DNwJQMQZladAsKTjv... to 9aZkaKhX4GslPUnbX... (flutter/engine#42343)
2023-05-26 skia-flutter-autoroll@skia.org Roll Skia from 7e20e6679785 to 1622df035714 (1 revision) (flutter/engine#42342)
2023-05-26 skia-flutter-autoroll@skia.org Roll Dart SDK from bc65e3f5efa0 to f17b745f5c3c (1 revision) (flutter/engine#42341)

Also rolling transitive DEPS:
  fuchsia/sdk/core/linux-amd64 from DNwJQMQZladA to 9aZkaKhX4Gsl
  fuchsia/sdk/core/mac-amd64 from AgIKKqtBtb6R to c6-zqvlx2Yty

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 bdero@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

-8573f3b63a1f9ff2cdba2659f590e6d91cda4f04
+84f2fc16e55da176978f1fe2b16c147d0cc0e37b

bin/internal/fuchsia-linux.version

-DNwJQMQZladAsKTjvnhob2DqgCWuf5Vvv21tj_Uqw-4C
+9aZkaKhX4GslPUnbXW5hdRF4_XQ8S0jCIXar7zOndIYC

bin/internal/fuchsia-mac.version

-AgIKKqtBtb6RJnyI9qwFKXdHvK0xJDQzWzQ30jwNJEYC
+c6-zqvlx2YtyGwGzJCy0RwvojLrFiKoi-g5t08HqtLAC