Disable App data usage preference if there's no usage data.

- when there is no usage data at all, launching the app data usage page
will show something blank, as there's no cycle with available usage
data. Check the overall historic usage to make sure that there's
usage data to be shown, otherwise, disable the preference.

Fixes: 123518021
Test: make RunSettingsRoboTests
Change-Id: I2d19f85e8618c41e2c31b9e4259cdc522f69e371