51980 [flutter_tools] support new SDK structure for sdkmanager (cla: yes, tool)

51981 Roll engine b77f509e0bb8..810727bf3f8f (3 commits) (cla: yes, waiting for tree to go green)

51984 [flutter_tools] add status logs to determine where test is getting stuck (cla: yes, tool)

51986 Roll engine 810727bf3f8f..7df0a6e35e5c (7 commits) (cla: yes, waiting for tree to go green)

51988 [flutter_tools] support coverage and machine together (cla: yes, tool)

51993 Made LayoutBuilder’s builder param required as well as added null check (cla: yes, framework, waiting for tree to go green)