84478 Turn on avoid_dynamic_calls lint in packages/flutter tests, make appropriate changes. (a: tests, team, tool, framework, f: material design, a: accessibility, a: internationalization, cla: yes, f: cupertino, d: examples, waiting for tree to go green)

84639 [versions] update dependencies (team, cla: yes, d: examples)

84809 Make scrollbar assertions less aggressive (a: tests, team, framework, f: scrolling, cla: yes, f: cupertino, d: api docs, d: examples, waiting for tree to go green, documentation, a: error message, tech-debt)

85148 Update GestureDetector docs to use DartPad sample (framework, cla: yes, d: api docs, d: examples, f: gestures, documentation)