47776 Add error message for flutter_gallery transitions_perf test. (cla: yes, d: examples, team, team: gallery, waiting for tree to go green)

47797 Document reasoning for why CustomMultiChildLayout size can’t depend on children and how to do it (cla: yes, d: api docs, documentation, framework, waiting for tree to go green)

47805 Revert “Add brightness to CupertinoNavigationBar (fixes #46216)” (cla: yes, f: cupertino, framework)

47829 Roll engine 42bb7c9eea9a..dc0187f21777 (15 commits) (autoroller: commit, cla: yes)

47831 Fix ShaderWarmUp docs (cla: yes, d: api docs, documentation, framework)