64670 [fuchsia] Sync run test script with engine version (cla: yes, platform-fuchsia, team, team: infra, waiting for tree to go green)

64672 Nnbd widgets (a: accessibility, cla: yes, f: cupertino, framework, team)

64674 Avoid thinning frameworks in iOS extensions (cla: yes, platform-ios, team, tool, waiting for tree to go green)

64676 Roll new gallery to help flaky Crane test (cla: yes, team, waiting for tree to go green)

64729 Temporarily disable the mac/android test on LUCI (cla: yes, team)

64736 [fuchsia] Refactor fuchsia_ctl use to a function (cla: yes, team, waiting for tree to go green)