[Keyboard, iOS] Generate iOS’s special key mapping by @dkwingsmt in https://github.com/flutter/flutter/pull/106909

Fix scrollbar margins by @Piinks in https://github.com/flutter/flutter/pull/107172

[flutter_driver] support send text input action by @nploi in https://github.com/flutter/flutter/pull/106561

Add an example for AppBar.notificationPredicate by @TahaTesser in https://github.com/flutter/flutter/pull/106018

Add an interactive example for Overlay by @TahaTesser in https://github.com/flutter/flutter/pull/107531

DropdownButton: Fix hint alignment when selectedItemBuilder is non-null. by @TahaTesser in https://github.com/flutter/flutter/pull/106731