87421 update ScrollMetricsNotification (framework, f: scrolling, cla: yes, f: cupertino, waiting for tree to go green)

87528 Fix some errors in snippets (team, framework, f: material design, cla: yes, f: cupertino, waiting for tree to go green)

87533 Fix Cuptertino dialog test to check correct fade transition (a: tests, team, framework, a: animation, cla: yes, f: cupertino, waiting for tree to go green, tech-debt)

87535 Add Cupterino button animation test (a: tests, framework, cla: yes, f: cupertino, waiting for tree to go green)

87537 Revert “Updated the skipped tests for cupertino package.” (framework, cla: yes, f: cupertino)