82687 Update the scrollbar (severe: new feature, framework, f: scrolling, cla: yes, platform-web, waiting for tree to go green, a: desktop)

82843 refactor: Add MaterialStateMixin (severe: new feature, framework, f: material design, cla: yes, d: api docs, d: examples, a: quality, waiting for tree to go green, documentation)

83082 Add SerialTapGestureRecognizer (severe: new feature, framework, cla: yes, f: gestures)

83428 add AnimatedScale and AnimatedRotation widgets (severe: new feature, framework, a: animation, cla: yes, d: api docs, d: examples, waiting for tree to go green, documentation)

84308 Added rethrowError to FutureBuilder (severe: new feature, framework, cla: yes, waiting for tree to go green, a: error message)