61388 benchmarkLive: a new LiveTestWidgetsFlutterBindingFramePolicy for benchmark on device (a: tests, cla: yes, framework, team, waiting for tree to go green)

61392 Update Card example and shadowColor default (cla: yes, f: material design, framework, waiting for tree to go green)

61394 Update the Scaffold examples; use the new button classes (cla: yes, f: material design, framework)

61398 Prevent material switch from recreating its render object when it becomes disabled (cla: yes, f: material design, framework, waiting for tree to go green)

61399 Document the mapping of system mouse cursors on Windows and Linux (a: desktop, a: mouse, cla: yes, framework)

61400 fix code comments in the route route didadd method (cla: yes, framework, waiting for tree to go green)