61554 Reland “Branch out android platform view perf testing (#60238)” (cla: yes, team)

61556 fix type error in web builds (cla: yes, cp: 1.20, cp: 1.20 completed, framework)

61561 [flutter_tool] remove no-op iOS folder when creating plugins. (cla: yes, targeted to release: 1.20, tool)

61564 ✒ Spell Check All .md Files Related to Flutter 💙 (a: internationalization, cla: yes, d: examples, team, tool, waiting for tree to go green)

61568 Fix build (fix references to _flutter -> flutter) (cla: yes, tool)

61569 Updated instructions of ‘flutter help attach’ (cla: yes, tool, waiting for tree to go green)