66302 Revert “Turn off flutter_gallery__transition_perf_e2e_ios32 in devicelab” (cla: yes, team, waiting for tree to go green)

66370 Change the default visual density to be adaptive based on platform. (cla: yes, f: material design, framework, team, tool)

66384 update to the latest null safe packages (cla: yes, team, tool)

66386 Default measureCpuGpu to true (cla: yes, perf: energy, severe: performance, team, waiting for tree to go green)

66391 Mark Windows gradle_plugin_light_apk_test as flaky (cla: yes, team)

66399 Stream logging from attached debugger on iOS 13+ (cla: yes, platform-ios, team, tool)