77087 Enable file_names and package_names lints (a: accessibility, cla: yes, framework, team, waiting for tree to go green)

77099 Turn on sized_box_for_whitespace lint, fix instances and tests. (a: accessibility, a: tests, cla: yes, d: examples, f: cupertino, f: material design, framework, team, waiting for tree to go green)

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

77263 Re-land “Toggable Refactor (#76745)” (a: accessibility, cla: yes, f: material design, framework, team, waiting for tree to go green)