48995 [flutter_tool] Don’t crash on Android emulator startup failure (cla: yes, tool, waiting for tree to go green)

48996 Add macOS Tests (Part 2: Material) (cla: yes, f: material design, framework)

48997 Add macOS Tests (Part 3: Widgets) (cla: yes, framework)

48998 Roll engine 6693dd75184b..839b34cc687c (2 commits) (autoroller: commit, cla: yes)

49000 Selection menu not showing when selection is 0,0 (cla: yes, f: material design, framework, waiting for tree to go green)

49004 Exposing inner controller of NestedScrollView (cla: yes, f: scrolling, framework, waiting for tree to go green)