87098 [gen_keycodes] Remove nonexistent Web keys and improve their emulation (a: tests, a: text input, team, framework, cla: yes, waiting for tree to go green)

87171 Revert “Keyboard events (#83752)” (a: tests, a: text input, team, framework, f: material design, cla: yes, f: cupertino)

87174 Reland: Keyboard events (a: tests, a: text input, team, framework, f: material design, cla: yes, f: cupertino, waiting for tree to go green)

87202 Restore the WidgetTester’s original surface size after testing setSurfaceSize (a: tests, framework, cla: yes)

87233 Revert “Reland 2: Make LiveTestWidgetsFlutterBinding work with setSur… (a: tests, framework, cla: yes)