69063 Add horizontal gesture support for CupertinoScrollbar (a: desktop, a: quality, cla: yes, f: cupertino, f: scrolling, framework, waiting for tree to go green)

69107 remove unnecessary null aware operator (cla: yes, f: cupertino, framework)

69160 Use runZonedGuarded() instead of deprecated onError. (cla: yes, f: cupertino, framework, tool)

69234 [flutter_releases] Flutter 1.22.3 framework cherrypicks (a: tests, cla: yes, engine, f: cupertino, f: material design, framework, team, tool)

69346 Adaptive constructor / TextInputAction docs fix (cla: yes, f: cupertino, f: material design, framework, waiting for tree to go green)