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

64671 Re-enable the Dart Development Service (DDS) (cla: yes, tool)

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)

64715 Clamp TabController animation value when calc _DragAnimation.value (a: animation, cla: yes, f: material design, framework, waiting for tree to go green)