83862 Migrate a few tool libraries to null safety (team, tool, cla: yes, waiting for tree to go green, a: null-safety)

83930 enable lint noop_primitive_operations (tool, cla: yes, waiting for tree to go green)

83934 [flutter_tools] bail from printing if devtools launch fails (tool, cla: yes, waiting for tree to go green)

83943 enable lint use_test_throws_matchers (tool, framework, f: material design, cla: yes, waiting for tree to go green)

83956 Migrate application_package to null safety (team, tool, cla: yes, waiting for tree to go green, a: null-safety)

83965 Make retry logic more permissive for network errors (tool, cla: yes, team: flakes, waiting for tree to go green)