79829 Redo Removed accentColor dependency from ExpansionTile (cla: yes, f: material design, framework, waiting for tree to go green)

79842 fix cupertino refresh control style (cla: yes, f: cupertino, framework, waiting for tree to go green)

79864 [flutter_tools] migrate cache to null safety (cla: yes, tool, waiting for tree to go green)

79877 Fix RenderEditable register the raw keyboard listener twice (cla: yes, framework)

79888 [web] Fix url strategy null safety (a: null-safety, cla: yes, f: routes, platform-web, waiting for tree to go green)

79898 migrate empty exceptions to tool exit with error message (cla: yes, tool, waiting for tree to go green)