80589 Re-land Fix FlexibleSpaceBar Opacity when AppBar.toolbarHeight > ktoolbarHeight (framework, f: material design, cla: yes, waiting for tree to go green)

80639 navigator cleans up its pop transitions. (framework, f: material design, cla: yes, waiting for tree to go green)

80657 Correct typo in addWithPaintTransform docs (framework, cla: yes, waiting for tree to go green)

80754 Added the ability to constrain the size of input decorators (framework, f: material design, cla: yes, waiting for tree to go green)

80756 Migrate LogicalKeySet to SingleActivator (a: tests, a: text input, team, framework, f: material design, severe: API break, cla: yes, f: cupertino)