59666 update _isolates_io.dart for better nnbd migration (cla: yes, framework)

59677 Revert “Characters Package” (cla: yes, f: material design, framework)

59711 fix the widget span layout when text scale factor != 1 (cla: yes, framework, waiting for tree to go green)

59778 Reland Characters Usage (cla: yes, f: material design, framework)

59791 Fix doc for DecoratedBox (cla: yes, framework, waiting for tree to go green)

59803 Add benchmark for Mouse region (web) (a: tests, cla: yes, framework, severe: performance, team, waiting for tree to go green)

59807 Label unnecessarily ellided (cla: yes, f: material design, framework, waiting for tree to go green)