78037 [flutter_tools] check for cygwin uname in entrypoint scripts (cla: yes, tool, waiting for tree to go green)

78051 Fix bug in ButtonStyle.lerp(), in _LerpSides (cla: yes, f: material design, framework, waiting for tree to go green)

78055 [integration_test] delay for at least one frame timing. (a: tests, cla: yes, framework, waiting for tree to go green)

78058 Fix CupertinoTextField incorrect background color when disabled (cla: yes, f: cupertino, framework, waiting for tree to go green, will affect goldens)

78065 Revert “f4c513eb8 Fix missing declaration of windows’ default_package (flutter/plugins#3705) (#78025)” (cla: yes)