Manual roll Flutter Engine from 67713071563e to af1fd1724986 (5 revisions) (#145006)

Manual roll requested by zra@google.com

https://github.com/flutter/engine/compare/67713071563e...af1fd1724986

2024-03-12 34871572+gmackall@users.noreply.github.com Try making android scenario app not do animations (flutter/engine#51349)
2024-03-12 skia-flutter-autoroll@skia.org Roll Dart SDK from 7a2c94fd0a26 to c97f2b303259 (1 revision) (flutter/engine#51345)
2024-03-12 skia-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from L6_XzizcJqjneCvGA... to UR-nKoLidl7cVLrrN... (flutter/engine#51344)
2024-03-12 30870216+gaaclarke@users.noreply.github.com [Impeller] implements blur styles for gradients (flutter/engine#51264)
2024-03-11 xilaizhang@google.com [codesign] fix typo in binary path (flutter/engine#51339)

Also rolling transitive DEPS:
  fuchsia/sdk/core/linux-amd64 from L6_XzizcJqjn to UR-nKoLidl7c

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://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

-67713071563ecda1becc9d9ee635b66aa60a1a4a
+af1fd172498602bfa6b621f0c8c705442437228b

bin/internal/fuchsia-linux.version

-L6_XzizcJqjneCvGA941vq-Dpu0FPwhdyfqJ0qXDUG0C
+UR-nKoLidl7cVLrrNWGMMxCkljvQJ8aq0g59CQg1IaYC