83020 Assign late variable without initstate in flutter_gallery (team, cla: yes, f: cupertino, waiting for tree to go green)

83407 enable lint prefer_interpolation_to_compose_strings (a: tests, team, tool, framework, f: material design, a: accessibility, a: internationalization, cla: yes, f: cupertino, d: examples, waiting for tree to go green)

83639 [TextSelectionControls] move the tap gesture callback into _TextSelectionHandlePainter, remove _TransparentTapGestureRecognizer. (framework, f: material design, cla: yes, f: cupertino, waiting for tree to go green)

83744 Fixed large amount of spelling errors (a: tests, team, tool, framework, f: material design, a: accessibility, a: internationalization, cla: yes, f: cupertino, d: examples, waiting for tree to go green)