83843 Clean up the bindings APIs (a: tests, team, framework, f: material design, a: accessibility, cla: yes, f: cupertino, d: examples, waiting for tree to go green)

83846 Count non-null-safe code in our tech debt benchmark (team, cla: yes, waiting for tree to go green)

83852 Remove globals from android application_package (team, tool, cla: yes, waiting for tree to go green, tech-debt)

83855 Migrate iOS project migrations to null safety (team, tool, cla: yes, waiting for tree to go green, a: null-safety)

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