63668 Fix FittedBox BoxFit.scaleDown sizing (cla: yes, framework, waiting for tree to go green)

63687 Remove decommission from RestorationBuckets (a: tests, cla: yes, framework, waiting for tree to go green)

63692 “Draw” vs “drawer” typo (cla: yes, d: api docs, documentation, f: material design, framework, waiting for tree to go green)

63695 Cherrypick engine hash to 7c89b4191329302d31f0d491f3aedb623ac7393b (cla: yes, engine)

63697 [flutter_tools] remove most globals from build system and tests (cla: yes, tool, waiting for tree to go green)