57522 Add doc and test for Container’s hitTest behavior (cla: yes, framework, waiting for tree to go green)

57526 Update the requirements for applying the elevation overlay. (cla: yes, f: material design, framework, waiting for tree to go green)

57534 Improve CupertinoDatePicker docs (cla: yes, f: cupertino, framework, waiting for tree to go green)

57535 Slider value indicator gets disposed if it is activated (cla: yes, f: material design, framework, waiting for tree to go green)

57574 Have _warpToCurrentIndex() shortcut logic behave properly (cla: yes, f: material design, framework, waiting for tree to go green)

57588 New license page. (a: internationalization, cla: yes, f: material design, framework)