22470 Reland “remove surface dependance on external view embedder (#22468)” (cla: yes, platform-android, platform-ios, waiting for tree to go green)

22478 [flutter_release] Flutter 1.22.4 engine cherry-pick build error fix (cla: yes, platform-android, platform-ios)

22538 [Android] Add systemNavigationBarDividerColor (cla: yes, platform-android, waiting for tree to go green)

22555 Make the AndroidContext superclass destructor virtual (cla: yes, platform-android)

22598 Replace support libraries for AndroidX (cla: yes, platform-android, waiting for tree to go green)

22599 Rename padding->viewPadding to match framework naming conventions (cla: yes, platform-android, waiting for tree to go green)