63273 Fixing code snippet example for meetsGuideline. (a: tests, d: api docs, documentation, framework, waiting for tree to go green)

63390 update for WidgetTester.move and WidgetTester.fling doc (a: tests, framework, waiting for tree to go green)

63410 WidgetTester.drag with time duration (a: tests, cla: yes, framework, team, waiting for tree to go green)

63434 add FrameTimingSummarizer (a: tests, framework, team, waiting for tree to go green)

63445 Pin iOS module test plugin versions (a: existing-apps, a: tests, platform-ios, team, waiting for tree to go green)

63523 Standardize the nullability of arguments to raw key data constructors. (a: tests, cla: yes, framework, team)