Roll Flutter Engine from 5a0a49939c64 to fea8e51b0280 (2 revisions) (…

…#149865)

flutter/engine@5a0a499...fea8e51

2024-06-06 skia-flutter-autoroll@skia.org Roll Dart SDK from 8e05acb354f5 to ed2b917b266d (1 revision) (flutter/engine#53262)
2024-06-06 bdero@google.com [Impeller] Round out extreme angles between curve polyline segments. (flutter/engine#53210)

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 matanl@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

@@ -1 +1 @@
-5a0a49939c64bc391ca755bedc718be12e792be5
+fea8e51b0280f827e06ccaa2c810dfde4cf2926e