21711 Perform selection check in DeleteSelected (affects: text input, cla: yes, platform-linux, platform-windows)

21714 Revert “fix On iOS, dialog titles are announced twice (#19826)” (cla: yes, platform-ios, waiting for tree to go green)

21716 [web] Add ShaderBuilder, change drawVertices to use builder. (cla: yes)

21718 Roll Dart SDK from 4ba58cad60e4 to fe566e6d08b1 (1 revision) (cla: yes, waiting for tree to go green)

21719 Allow TalkBack navigation while a platform view is rendered (cla: yes, platform-android, waiting for tree to go green)