[framework] inline AbstractNode into RenderObject by @jonahwilliams in https://github.com/flutter/flutter/pull/103832

Revert “Fix DropdownButton menu clip” by @Piinks in https://github.com/flutter/flutter/pull/104203

Add ability for ModalRoutes to ignore pointers during transitions and do so on Cupertino routes by @willlockwood in https://github.com/flutter/flutter/pull/95757

[Mouse] Remove all pointers at the end of tests by @dkwingsmt in https://github.com/flutter/flutter/pull/102694

Desktop platforms should not collapse selection on copy by @Renzo-Olivares in https://github.com/flutter/flutter/pull/104209

CupertinoColors: Add diagrams by @TahaTesser in https://github.com/flutter/flutter/pull/103280