This fixes a race condition in test/integration.shard/cache_test.dart which allowed the test to fail if the machine took a very long time to acquire a lock or launch a process.

This reverts commit a786f657.

This change adds some localizations for keyboard keys that will be used in creating shortcut descriptions in menus.

Part of #72926

Simplify SafeArea test for maintainBottomViewPadding to ensure maintainBottomViewPadding is always respected (#97646)

* Starts using the `--source` flag to compile the dart registrant.

* updated general.shard tests

* Fixed the resident compiler flow

* added integration test

* made the integration test self contained

* renamed generated_main to dart_plugin_registrant

* cleaned up for review

* added task runner for ci

* added bringup and TESTOWNERS

* updated failure message