Dev docs imply that music devices support live glances and non-music device do not, but this is not true in some cases

https://developer.garmin.com/connect-iq/core-topics/glances/#glances

- first-gen MARQ devices support music, but live glance updates are not supported, according to simulator.json

- fr255 (not fr255m) lacks music support, but live glance updates are supported

- fr165 (not fr165m) lacks music support, but live glance updates are supported

I'm sure if additional non-music devices are released in the future, they'll probably support live glances as well.