Roll Flutter (stable) from 12fccda to ead4559 (1 revision) (flutter#5022

)

flutter/flutter@12fccda...ead4559

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-stable-packages
Please CC bmparr@google.com,rmistry@google.com,stuartmorgan@google.com
on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter (stable):
https://github.com/flutter/flutter/issues/new/choose
To file a bug in Packages:
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

.ci/flutter_stable.version

@@ -1 +1 @@
-12fccda598477eddd19f93040a1dba24f915b9be
+ead455963c12b453cdb2358cad34969c76daf180