83924 Remove TextTheme deprecations (team, framework, f: material design, severe: API break, cla: yes, waiting for tree to go green, tech-debt)

83926 Remove deprecated typography constructor (team, framework, f: material design, severe: API break, cla: yes, waiting for tree to go green, tech-debt)

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

83947 Fixed TimeOfDay.hourOfPeriod for the noon and midnight cases. (framework, f: material design, cla: yes, waiting for tree to go green)

83959 Remove “unnecessary” imports. (a: tests, team, framework, f: material design, cla: yes, f: cupertino, waiting for tree to go green)