71137 Fix the duration assertion error for the _animateToInternal method and refine the error description (cla: yes, framework, waiting for tree to go green)

71174 AdoptAWidget: PageView (cla: yes, d: api docs, d: examples, documentation, framework)

71180 Revert “Implement dryLayout for RenderAnimatedSize” (cla: yes, framework)

71184 Update AppBar and AppBar Theme to new Theme conventions and latest Material spec (cla: yes, f: material design, framework)

71185 Reland “Implement dryLayout for RenderAnimatedSize” (cla: yes, framework, waiting for tree to go green)

71236 Raw keyboard shortcuts & deletions should not read from _plainText (cla: yes, f: material design, framework, waiting for tree to go green)