"Verify device" dialog is called "Verify other device", even when it's the local device that needs verifying

Currently, when you're verifying one of your own devices, the device that initiated the verification request and the device responding to the request both display identical "Verify other device" dialogs, each acting as though the other device is the one being verified. This is a result of shared code between the UI for verifying your own devices and the UI for verifying other users; verifying another user is a symmetrical operation, but verifying your own device isn't. In the self-verification scenario, the currently-unverified device should make clear that this device is the one getting verified.