91704 Migrate xcdevice and ios devices to null safety (tool, cla: yes, waiting for tree to go green, a: null-safety, tech-debt)

91705 Migrate desktop_device to null safety (tool, cla: yes, waiting for tree to go green, a: null-safety, tech-debt)

92055 Migrate desktop_device to null safety (tool, cla: yes, waiting for tree to go green, a: null-safety, tech-debt)

92056 Migrate xcdevice and ios devices to null safety (tool, cla: yes, waiting for tree to go green, a: null-safety, tech-debt)