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)

83661 Remove unused SingleTickerProviderStateMixin from AnimatedSize  example (framework, a: animation, cla: yes, d: api docs, d: examples, waiting for tree to go green, documentation)

84807 Fix an animation issue when dragging the first item of a reversed list onto the starting position. (framework, a: animation, f: material design, f: scrolling, cla: yes, a: quality)

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)

a: fidelity - 6 pull request(s)