63026 Update to the latest localizations - Adds missing DatePicker strings and fixes manually entering date for German (a: internationalization, f: cupertino, f: material design, framework, waiting for tree to go green)

63030 using named constructor to FrameTiming in scheduler_test.dart (a: tests, engine, framework, waiting for tree to go green)

63034 Remove Special Handling of Norwegian Locales (a: internationalization, f: cupertino, f: material design, framework, team)

63054 fix SingleChildScrollView clip bug (a: quality, f: scrolling, framework, waiting for tree to go green)

63057 handler can be null in platform_channel (framework, waiting for tree to go green)

63083 unnecessary null check (framework, waiting for tree to go green)