* Roll Flutter Engine from 67254d6e4b03 to 8d83b98c55b3

* Roll Dart SDK from 35a9facce191 to e517487c5679 (Dart 3.0) (#38105)

* Bump SDK versions.

* Bump Dart SDK version constraints

* Update shrine package to 2.0.1 (null safe version)

* Fix more tests.

* Include patches from Jason for min android sdk version

* Fix analyzer warning