78343 Align more closely with package:test (#77118) (a: accessibility, a: tests, cla: yes, f: material design, framework, team, tool, waiting for tree to go green)

78353 [flutter_tools] remove globals from logger (cla: yes, tool)

78357 [flutter_tools] remove globals from process, fs (cla: yes, tool)

78359 [flutter_tools] migrate context to null safety (cla: yes, tool)

78380 [flutter_tools] handle OSError 2 from current working directory (cla: yes, tool)

78381 Add test for dart compilation error build output (cla: yes, team, tool, waiting for tree to go green)

78386 Try fixing web tool tests on windows (cla: yes, tool)