68694 Fix a widgetspan hittest bug (cla: yes, framework, waiting for tree to go green)

68708 Refactor update_icons (cla: yes, team)

68714 Revert “enable unnecessary_string_escapes and use_raw_strings” (a: internationalization, a: tests, cla: yes, f: cupertino, f: material design, framework, team, tool)

68721 Fix assert due to VSCode passing in an isolateId as well as the expected args to setPubRootDirectories. (cla: yes, framework)

68722 Roll Engine from c2c74ed7080a to 27184748130a (2 revisions) (cla: yes, waiting for tree to go green)