23573 Windows: Add CoreWindow implementation of FlutterWindowsView (Flutter#70205) (cla: yes, needs tests)

23660 Add a –linux shortcut to –target-os=linux (cla: yes)

23674 Fix argument specifier for g_warning() (cla: yes, waiting for tree to go green)

23730 Continue filling in the list of FontFeatures (cla: yes, waiting for tree to go green)

23776 unhide uitextinput when focused (cla: yes, platform-ios, waiting for tree to go green)

23793 fix video(texture) with opacity can not play issue (cla: yes, waiting for tree to go green)

23800 [canvaskit] fix text background, foreground, color; add text style tests (cla: yes)