77398 enable prefer_function_declarations_over_variables lint (a: accessibility, a: tests, cla: yes, f: cupertino, f: material design, framework, team, tool, waiting for tree to go green)

77400 [flutter_tools] migrate to null safe mustache (cla: yes, team, waiting for tree to go green)

77405 Fix typo in Windows template (cla: yes, team, tool, waiting for tree to go green)

77420 Add debug_second_compile_millis benchmark metric (cla: yes, platform-android, platform-ios, team, team: benchmark, waiting for tree to go green)

77428 Add iOS archive codesign test (cla: yes, platform-ios, team, waiting for tree to go green)