52846 Move outputPreferences to globals (cla: yes, tool)

52847 Move xcodeProjectInterpreter to globals (cla: yes, tool)

52848 iOS test should specify DeviceOperatingSystem.ios (cla: yes, team)

52850 Android test should run in stage: devicelab (cla: yes, team)

52853 Mark platform_views_scroll_perf__timeline_summary as flaky (cla: yes, team)

52854 [flutter_tools] refactor iOS tests for Device.startApp into new file (cla: yes, tool)

52857 Roll engine 758de2d05d1d..bb6c9a343d92 (6 commits) (cla: yes, waiting for tree to go green)