64592 Fix typo in flutter_tools –analyze-size output. (cla: yes, tool, waiting for tree to go green)

64594 [null-safety] remove sound-null-safety by default, remove experiment flag (cla: yes, team)

64596 Fixes router to not report route information when it is already up to… (cla: yes, framework, waiting for tree to go green)

64599 Fix tests that use bogus objects, update TestImageInfo interface (cla: yes, f: cupertino, framework, waiting for tree to go green)

64602 Revert “[flutter_tools] avoid creating Android Devices if AndroidSDK cannot be found” (cla: yes, tool)

64609 Use Pixel4 for better wait times (cla: yes, team)