64050 1.21.0-9.1.pre cherrypicks (cla: yes, engine, f: material design, framework, team, tool)

64062 Revert “Prevent material switch from recreating its render object when it becomes disabled” (cla: yes, f: material design, framework, waiting for tree to go green)

64091 Revert “Prevent viewport.showOnScreen from scrolling the viewport if the specified Rect is already visible. “ (cla: yes, f: material design, framework)

64094 Revert “Ensure time picker input mode lays out correctly in RTL” (a: internationalization, cla: yes, f: material design, framework)

64097 [Material] Relanding fix to ensure time picker input mode lays out correctly in RTL (a: internationalization, cla: yes, f: material design, framework)