78942 Migrate visual_studio to null safety (a: null-safety, cla: yes, team, tool)

78943 Migrate platform_plugins to null safety (a: null-safety, cla: yes, team, tool)

78944 Migrate flutter_project_metadata to null safety (a: null-safety, cla: yes, team, tool)

78949 Migrate device_port_forwarder to null safety (a: null-safety, cla: yes, team, tool)

78991 Manually close the tree (cla: yes, team)

79005 Revert “Remove keyLabel and debugName from Logical/PhysicalKeyboardKey” (a: tests, cla: yes, framework, team)

79006 Revert “Manually close the tree” (cla: yes, team)