95657 Migrate flutter_device_manager to null safety (a: text input, tool, waiting for tree to go green, a: null-safety, tech-debt)

a: text input - 35 pull request(s)

90840 Windows home/end shortcuts (a: text input, framework, cla: yes)

91698 Fix text cursor or input can be outside of the text field (a: text input, framework, cla: yes, waiting for tree to go green, will affect goldens)

92480 [Cupertino] fix dark mode for ContextMenuAction (a: text input, framework, cla: yes, f: cupertino, waiting for tree to go green)

92481 [Cupertino] Exclude border for last action item in CupertinoContextMenu (a: text input, framework, cla: yes, f: cupertino)